command line – How to install Rails?

I do not find this specific error on the web, but when you type sudo gem install rails -v 5.2.2 I receive the following error:

                nysa @ nysa-System-Product-Name: ~ $ sudo gem install rails -v 5.2.2
Asset Recoveryupport-5.2.2.gem
Actionview-5.2.2.gem Recovery
Recovery of actionpack-5.2.2.gem
Recovery of rails-5.2.2.gem
Recover activecord-5.2.2.gem
Recovery of activemodel-5.2.2.gem
Recovering the file activestorage-5.2.2.gem
ActionCable Recovery-5.2.2.gem
Activejob Recovery-5.2.2.gem
Actionmailer-5.2.2.gem recovery
Recovery of rails-5.2.2.gem
Assupports-5.2.2 successfully installed
Actionview-5.2.2 successfully installed
Actionpack-5.2.2 successfully installed
Rails successfully installed-5.2.2
Activemodel-5.2.2 successfully installed
Activateecord-5.2.2 successfully installed
Activestorage-5.2.2 successfully installed
Build native extensions. It could take a moment ...
ERROR: Error while installing rails:
ERROR: Can not create a native gem extension.

current directory: /var/lib/gems/2.5.0/gems/websocket-driver-0.7.1/ext/websocket-driver
/usr/bin/ruby2.5 -I /usr/local/lib/site_ruby/2.5.0 -r ./siteconf20190626-19849-1302wcu.rb extconf.rb
mkmf.rb can not find the header files for ruby ​​in /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.5.0/gems/websocket-driver-0.7.1 for inspection.
Results logged in /var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/websocket-driver-0.7.1/gem_make.out

Looks like I already have a version of rails installed but typing rails -v I get the message that the rails do not exist.
How can I install the latest version of Rails and it works?

Fatal error: the class' Archive_Tar & # 39; could not be found in ArchiveTar.php on line 8

Rather than re-explaining the whole process that has brought me here, I hope to simply be able to refer to this question: Unable to access specific admin pages

In this question, I encountered errors while trying to update Drupal. I've also updated the composer.

After clearing the caches, restarted PHP and my Docksal project, the errors are gone and the administrator seems usable, with the exception of the thing I need

A backup tar has been lost all this time, so I try to create a new backup, so I'm back to safety. But, when I go to the export page, here: page / admin / config / development / configuration / full / export, I click on the export button, and this gives me a fatal error:
Fatal Error: The class' Archive_Tar & # 39; could not be found in /var/www/docroot/core/lib/Drupal/Core/Archiver/ArchiveTar.php on line 8.

When I check the log, the following message appears: "The /tmp/config.tar.gz file has not been deleted because it does not exist."

This is Drupal 8.7.3, so this can help you.

I would just drush archive-backup, if I could. But this option has been removed.

Not sure if I gave enough information, above. Let me know.

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.
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python 3.x – sklearn.linear_model does not draw the trend line

From sklearn.linear_model, we use linear_model.LinearRegression () to create a linear regression object, lm. We then use the fit () method of lm to define the independent and dependent variable which, for us, the independent variable val_name = "acatis and the dependent variable nom_ind =" Eurostoxx_50.

fig, ax = plt.subjects (1, 1)
ax.scatter (val_ind[nom_val], val_ind[nom_ind])
# ax.set_xlim ((0.01, 1000))
ax.set_ylim ((3000, 8000))
ax.plot (val_ind[nom_val], lm.predict (val_ind[nom_ind][:, np.newaxis]), color = "blue")
ax.set_ylabel (indname)
plt.show ()

It returns the following coefficients:

Intercept is the -8837.565527065977

The value of the coefficient of Acatis is [64.1244318]

  Estimated characteristics
0 Acatis 64.124432

Then I try to plot the dispersion graph and the trend line and we see that it does not show the trend line, in blue, considering the code, should shacer.

fig, ax = plt.subjects (1, 1)
ax.scatter (val_ind[nom_val], val_ind[nom_ind])
ax.plot (val_ind[nom_val], lm.predict (val_ind[nom_ind][:, np.newaxis]), color = & # 39; red)
ax.set_xlabel (val_name)
ax.set_ylabel (indname)
plt.show ()

If I do a linear regression with SciPy as follows:

"" "Linear regression with SciPy" ""
# Mastering Python for Finance.pdf (18788KB), page 25
from scipy import statistics
x = val_ind[nom_val] 
y = val_ind[nom_ind] 
slope, intercept, value_r, value_p, std_err = stats.linregress (x, y)
print ("slope:% f intercept:% f"% (slope, intersection))

plt.plot (x, y, o, label = "original" data)
plt.plot (x, interception + slope * x, r, label = line adjusted, color = blue)
plt.legend ()
plt.show ()

The trend line is drawn in blue and the same coefficients are obtained as in the previous case.

slope: 64.124432 intersection: -8837.565527

Why does the first option not trace the trend line?
The Val_ind DataFrame is in this link
[https://github.com/akitxu/Aprendiendo-GitHub][1]

in the "Files" folder, with the name "val_ind.xlsx"

command line – install activinspire on Ubuntu 18.04

As I understand it, there are two problems: the 4.15 kernel is not supported (so quit Ubuntu 16.04.5 and 18.04) and it must work from a 32-bit system or l & # 39; 39, adding 32-bit packages on a 64-bit architecture. I actually thought of Ubuntu 16.04.1 to keep the kernels compatible. But you have to reinstall

Source: https://forum.ubuntu-fr.org/viewtopic.php?id=2032702 (Translate using Google or similar)

command line – link via ssh server to ssh client

I can install and run an ssh server on my Android 6.0 phone (Banana ssh server) and run a ssh client on it (termius). How to invoke the client from the command line provided by the server? I type "ssh" and it is not a recognized command. I want to use the phone to connect to other servers.

Application windows – Togu TAL-Sampler audio line 2.8.5 | NulledTeam UnderGround

Togu TAL-Sampler audio line 2.8.5 | 60.8 MB
TAL-Sampler is not just a sample player. It is a complete analog synthesizer featuring a sampler motor as a sound source, including a powerful modulation matrix and a high-quality 24/7 auto-oscillating low pass filter. 6 dB. Do not expect a library of 40 GB piano samples with samples for each velocity or something similar. The idea is to bring back the fun sampling of the good old days with small samples, fast loading times and an intuitive workflow to create your own sample presets without getting lost in the settings.

It is possible to choose between different digital analog converters (DACs) to get the vintage sound of different hardware samplers in your software. We do not do any cheap crush or decimation on the output signal. We actually downsample the sample at the desired sampling frequency, then process the data according to the chosen DAC and sample them at the desired height. Most DAC modes offer a LEVEL slider. This feature allows the user to reduce the volume of the recorded sample and decreases the quality of the sample. Load your favorite high quality sample and give it a vintage and noisy sound. The 24dB low pass filter will love it!

Characteristics
Vintage DAC Modes (Emu II, AM6070, S1000, Sample Hold, Linear, Clean).
Low-pass reconstruction filter steep 96dB (Emu II and AM6070 F).
Variable sampling rate.
MOD-matrix powerful.
Four layers of samples.
Three AHDSR envelopes with Digital / RC vintage mode.
Three LFOs (Triangle, Saw, Rectangle, Random, Noise).
High quality effects (Reverb, EQ, Delay).
Resonance zero resonance filter (24/12/6 dB LP, HP, BP, AP, Notch).
Wide range of supported audio formats (* .wav, * .aiff, * .aif, * .mp3, * .ogg, * .flac).
Scalable, high-resolution user interface.
The ability to change the font and background color.
Fast sample and predefined loading.
Import SFZ and SF2 samples.
More than 100 presets available for download (right).

Required configuration:
Windows: Windows XP or higher (32/64 bits)
AAX: Pro Tools 10.3.6 or higher

Home page

Recommend the download link | Please tell me Thank you Keep the topic live

sql – MYSQL Show all values ​​of a query in a single line by identifier

I made the following request:

SELECT v. *, It. *, P.description, c.name, c.name, f.name, f.name of server FROM sales v INNER JOIN itemvend it ON it.addends = v.endings INNER JOIN client c ON c. idclient = v.idclient INNER JOIN a product p ON p.product = it.product INNER JOIN an official f ON functional id = v.idfunctional COMMANDER BY v.end sales

And I got the following answer:
I could not put it decently here

My question is:
Is it possible to put idend values ​​on a single line?

For example, I would like IDVD 10 to appear, in this case, on a single line but with the three descriptions appearing, the value and qtd also appearing on the same line.

Have I been clear on what I intend to do? Someone can help me?

dataframe – repeated value in each R line

To clarify the problem, I have the following data:

df <-data.frame (id = 1: 7, var1 = c (1,2,5,6,4, NA, NA), var2 = c (1,3,5,7,1,1, NA) , var3 = c (3,5,2,1,1, NA, NA), var4 = c (3,5,2,2, NA, NA, NA), var5 = c (2,5,2,3 , NA, NA, NA))



df
id var1 var2 var3 var4 var5
1 1 1 1 3 3 2
2 2 2 3 5 5 5
3 3 5 5 2 2 2
4 4 6 7 1 2 3
5 5 4 1 1 NA NA
6 6 NA 1 NA NA NA
7 NA NA NA NA NA NA

I want to generate a new column, called var6 with the most repeated value per line (line mode), in the lines var1 a var5. But there it does not end, in case there is no mode (as in row 1 of the df), var6 It will take a value of 99. In conclusion, I am looking for this:

df
id var1 var2 var3 var4 var5 var6
1 1 1 1 3 3 2 99
2 2 2 3 5 5 5 5
3 3 5 5 2 2 2 2 2
4 4 6 7 1 2 3 99
5 5 4 1 1 NA NA 1
6 6 NA 1 NA NA NA 1
7 7 NA NA NA NA NA

By the way, I added the id column to emphasize the fact that I have more columns in the df file and not just the ones I want to compare.

In advance I appreciate any help.

c # – Compact command line arguments parser

I've therefore decided to write my own small command line arguments parser for various other projects I'm working on. I am aware that there are many good libraries of command line parsers, but I still wrote mine (reasons related to practice and implementation).

The analyzer works well, but I feel that it can be improved a lot.

  1. Mainly the actual analyzer, CommandLineParser.cs. This seems very poorly structured and I have trouble reading myself.
  2. Abstraction. I wonder if I can abstract it a little more without making it a pain to use? Maybe by introducing interfaces?
  3. Appellation. I went there with Option for the command line switch and with Value for the possible parameters. Are my methods / classes self-descriptive?
  4. Optimizations I am sure that some segments can be achieved more efficiently, mainly in the following areas: CommandLineParser.ParseArguments (string[] args)

Some points to note:

  1. I would like to keep the structure for the CommandLineValue.cs and CommandLineOption.cs generally identical because they are part of a plug-in architecture to communicate command-line arguments between plug-ins and the main application.
  2. No use of attributes to store command line options.
  3. I have written some unit tests to check the functionality of parsers. Although they are not the main class to review, I also appreciate the comments 🙂

analyzer:

Public class CommandLineParser
{
/// 
    /// Define all possible command line options that the plugin can handle
/// 
    public list SupportedOptions {get; }

/// 
    /// Initialize the command-line parser with a list of command-line options exposed by the plugin
/// 
    /// 
    
    
    
    public CommandLineParser (List supported options)
{
SupportedOptions = supportedOptions;
}


/// 
    /// Analyze command line arguments and return a list of command line values ​​that can be passed to
/// plugin for further processing. The function also processes the amount and / or the invalid format of options, values
/// as well as missing mandatory arguments, etc.
/// 
    /// The arguments to analyze
    /// A list of parsed command-line values ​​+ options
    /// 
    
    
    
    /// 
    
    
    
    /// 
    
    
    
    /// 
    
    
    
    public IEnumerable ParseArguments (string[] args)
{
var result = new list();

if (length.args. == 0)
returns Enumerable.Empty();


// Process all the arguments of the command line
for (int i = 0; i < args.Length; i++)
        {
            CommandLineOption option = null;
            if (!IsSupportedOption(args[i], out option))
                throw new InvalidCommandLineOptionException($"{args[i]} is not a valid command line option");

            // Verify if the option expects additional values
            if (HasAdditionalValues(option))
            {
                // Check if enough additional values are given
                int additionalValues = option.ParameterTypes.Count;
                if (i + additionalValues + 1 > args.length)
launch a new InsufficientCommandLineValuesException (
$ "{args[i]} expects {additionalValues} values. ");

// Check if the extra values ​​are in the correct format
// ToDo: Find a more elegant solution
var values ​​= args.ToList (). GetRange (i + 1, i + additionalValues) .ToList ();
var types = option.ParameterTypes.ToList ();

var castedValues ​​= values.Zip (types, (value, type) =>
{
try
{
return Convert.ChangeType (value, type);
}
capture
{
launch a new exception InvalidCommandLineValueException (
$ "Unable to convert value {value} to type {type}");
}
});

result.Add (new CommandLineValue (option, castedValues.ToList ()));

// Increase i to move to the next option
i + = AdditionalValues;
}
other
{
result.Add (new CommandLineValue (option, null));
}
}

// Collect the required arguments
listing requiredOptions = new list();
foreach (option var in SupportedOptions)
{
if (option.Required)
foreach (var tag in option.Tags)
{
requiredOptions.Add (tag);
}
}

// Check that no required argument is missing (or does not occur twice)
missing var = GetMissingRequiredArgs(requiredOptions, args.ToList ());
if (missing == null)
return the result;
launch the new MissingRequiredCommandLineOptionException (
$ "The required array (s) {string.Join (", ", missing)} occurred several times");
}

/// 
    /// Check that all required options are used and that they (the required options) do not occur multiple times and are not duplicates
/// 
    /// A list of required options
    /// <The arguments to check
    /// Any primitive type
    /// Launch if separate required arguments exist multiple times
    /// A list of missing required arguments, if any. Null there is no lack of it.
    Static list GetMissingRequiredArgs(Listing required, List arguments)
{
// convert to a dictionary where we store the required element as a key for the account of an element
var requiredDict = required.ToDictionary (k => k, v => 0);

foreach (var item in arguments)
{
if (! requiredDict.ContainsKey (item))
Carry on;
requisDict[item]++; // if necessary, add to count
if (requiredDict[item] <= 1)
Carry on;
launch the new DuplicateRequiredCommandLineOptionException (
$ "The required option {item} appeared more than once!");
}

var result = new list();
// now we check for missing items
foreach (key var in requiredDict.Keys)
{
if (requiredDict[key] == 0)
{
result.Add (key);
}
}

return the result.All ()? result: null;
}


/// 
    /// Check if a given option is part of the supported options
/// 
    /// true if the option is supported otherwise false
    private bool IsSupportedOption (string optionIdentifier, optional option of CommandLineOption)
{
for (var index = 0; index < SupportedOptions.Count; index++)
        {
            var supportedOption = SupportedOptions[index];
            if (supportedOption.Tags.Any(tag => tag == optionIdentifier))
{
option = SupportedOptions[index];
return true;
}
}

option = null;
returns false;
}

/// 
    /// Indicates whether a command line option has multiple values ​​or it is simply an indicator
/// 
    /// Command line option to check
    /// true if the option has multiple values, otherwise false
    private bool HasAdditionalValues ​​(CommandLineOption option)
{
var noParameters = option.ParameterTypes == null || option.ParameterTypes.Count == 0;
return! noParameters;
}
}

Classes for storing information in the command line:

Public class CommandLineOption
{
/// 
    /// The identifier of the command line option, for example. -h or --help
/// 
    ICollection public Tags {get; }

/// 
    /// Description of the command line option
/// 
    public string Description {get; }

/// 
    /// Indicates whether the argument is optional or required
/// 
    public bool Required {get; }

/// 
    /// Types of additional values ​​provided such as directory paths, values, and so on.
/// 
    Publicist ParameterTypes {get; }

/// 
    /// Create a new command-line option true / false
/// 
    /// Identifier of the command line option
    /// Description of the command line option
    /// Indicates whether the command-line option is optional or not
    public CommandLineOption (IEnumerable tags, string description, bool required = false)
{
Tags = tags.ToList ();
Description = description;
Required = required;
}

/// 
    /// Create a new command-line option true / false
/// 
    /// Identifier of the command line option
    /// Description of the command line option
    /// Indicates whether the command-line option is optional or not
    public CommandLineOption (IEnumerable tags, string description, bool required = false, params Type[] paramètreTypes):
this (tags, description, required)
{
ParameterTypes = new list(ParameterTypes);
}

}
Public class CommandLineValue: IEqualityComparer
{
/// 
    /// Contains all values ​​specified after a command line option
/// 
    Publicist Values ​​{get; }

/// 
    /// The command-line option to which the value or values ​​belong
/// 
    public Option CommandLineOption {get; together; }

/// 
    /// Store values ​​corresponding to a command line option
/// 
    /// The command line option to which the values ​​refer
    /// The values ​​that are stored
    public CommandLineValue (CommandLineOption option, IList values)
{
Option = option;
Values ​​= values;
}


public bool Equals (CommandLineValue x, CommandLineValue y)
{
if (x.Option.Description == y.Option.Description &&
x.Option.Required == y.Option.Required &&
x.Option.Tags.SequenceEqual (y.Option.Tags) &&
x.Option.ParameterTypes.SequenceEqual (y.Option.ParameterTypes) &&
x.Values.SequenceEqual (x.Values))
return true;
returns false;
}

public int GetHashCode (CommandLineValue obj)
{
returns base.GetHashCode ();
}
}

Custom Exception Classes:

Public class DuplicateRequiredCommandLineOptionException: Exception
{
public DuplicateRequiredCommandLineOptionException (string message): base (message)
{
}
}

Public class InsufficientCommandLineValuesException: Exception
{
public InsufficientCommandLineValuesException (string message): base (message)
{
}
}

Public class InvalidCommandLineOptionException: Exception
{
public InvalidCommandLineOptionException (string message): base (message)
{
}
}

Public class InvalidCommandLineValueException: Exception
{
public InvalidCommandLineValueException (string message): base (message)
{
}
}

Public class MissingRequiredCommandLineOptionException: Exception
{
public MissingRequiredCommandLineOptionException (string message): base (message)
{
}
}

Unit tests:

Public class CommandLineParserTests
{     

    [Fact]
    public void ParseDuplicateRequiredArguments ()
{
var args = new[] {"--randomize", "-o", "/ home / user / Documents", "--randomize", "-d"};
var supportedOptions = new list
        {
new CommandLineOption (
New[] {"-r", "--randomize"},
"Random flag",
true),
new CommandLineOption (
New[] {"-o", "--output-directory"},
"Specify the output directory",
true,
typeof (string)),
new CommandLineOption (
New[] {"-d", "--dummy"},
"Just another unused flag"),
};

var parser = new CommandLineParser (supportedOptions);
Assert.Throws(() =>
parser.ParseArguments (args)
)
}

    [Fact]
    public void ParseMissingRequiredArguments ()
{
var args = new[] {"--randomize", "--output-directory", "/ home / user / Documents"};
var supportedOptions = new list
        {
new CommandLineOption (
New[] {"-r", "--randomize"},
"Random flag"),
new CommandLineOption (
New[] {"-o", "--output-directory"},
"Specify the output directory",
true,
typeof (string)),
new CommandLineOption (
New[] {"-d", "--dummy"},
"Just another unused flag"),
};

var parser = new CommandLineParser (supportedOptions);
Assert.Throws(() =>
parser.ParseArguments (args)
)
}

    [Fact]
    public void ParseMatchingTypeCommandLineValues ​​()
{
var args = new[] {"--log", "info", "1337", "3.1415"};
var supportedOptions = new list
        {
new CommandLineOption (
New[] {"-l", "--log"},
"Records information from exactly three data sources",
false,
typeof (string), typeof (int), typeof (float)
};

var parser = new CommandLineParser (supportedOptions);

var expectValue = new CommandLineValue (new CommandLineOption (
New[] {"-l", "--log"},
"Records information from exactly three data sources",
false,
typeof (string), typeof (int), typeof (float),
new object[] {"info", 1337, (float) 3.1415});

var actualValue = parser.ParseArguments (args) .ToList ()[0];
Assert.True (expectedValue.Equals (actualValue, expectValue));

}

    [Fact]
    public void ParseMismatchingTypeCommandLineValues ​​()
{
var args = new[] {"--log", "info", "1337", "3.1415"};
var supportedOptions = new list
        {
new CommandLineOption (
New[] {"-l", "--log"},
"Records information from exactly three data sources",
false,
typeof (string), typeof (int), typeof (long),
};
var parser = new CommandLineParser (supportedOptions);

Assert.Throws(() =>
parser.ParseArguments (args)
)
}

    [Fact]
    public void ParseInsufficientCommandLineValues ​​()
{
var args = new[] {"-l", "info", "info2"};
var supportedOptions = new list
        {
new CommandLineOption (
New[] {"-l", "--log"},
"Records information from exactly three data sources",
false, typeof (string), typeof (string), typeof (string)),
};
var parser = new CommandLineParser (supportedOptions);

Assert.Throws(() =>
parser.ParseArguments (args)
)
}

    [Fact]
    public void ParseInvalidCommandLineOption ()
{
var args = new[] {"--Obligate"};
var supportedOptions = new list
        {
new CommandLineOption (new[] {"-h", "--help"}, "Show Help Menu"),
};
var parser = new CommandLineParser (supportedOptions);

Assert.Throws(() =>
parser.ParseArguments (args)
)
}

    [Fact]
    public void ParseNoCommandLineOptions ()
{
var args = new string[] {};
var parser = new CommandLineParser (null);
var result = parser.ParseArguments (args);

Assert.Equal (Enumerable.Empty(), result);
}
}

I appreciate all suggestions. Do not hesitate to be very fussy. 🙂

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