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How to track child process using strace?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Max length UITextField
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With Swift 5 and iOS 12, try the following implementation of textField(_:shouldChangeCharactersIn:replacementString:) method that is part of the UITextFieldDelegate protocol:
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) ->...
Setting Windows PowerShell environment variables
... found out that setting the PATH environment variable affects only the old command prompt. PowerShell seems to have different environment settings. How do I change the environment variables for PowerShell (v1)?
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Convert decimal to binary in python [duplicate]
...inary equivalent?
I am able to convert binary to decimal using int('[binary_value]',2), so any way to do the reverse without writing the code to do it myself?
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Restoring MySQL database from physical files
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A MySQL MyISAM table is the combination of three files:
The FRM file is the table definition.
The MYD file is where the actual data is stored.
The MYI file is where the indexes created on the table are stored.
You should be able to restore by copyin...
How to check 'undefined' value in jQuery
... variable or other unevaluated operand. The main advantage of this method, compared to if (value === undefined) { ... }, is that typeof will never raise an exception in case if variable value does not exist.
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Difference between Destroy and Delete
... about your models callbacks then use destroy_all
From the official docs
http://apidock.com/rails/ActiveRecord/Base/destroy_all/class
destroy_all(conditions = nil) public
Destroys the records matching conditions by instantiating each record
and calling its destroy method. Each object’...
Is the practice of returning a C++ reference variable evil?
...rn 0;
}
If the lifetime should be left up to the caller, and you're just computing the value.
Summary: it's okay to return a reference if the lifetime of the object won't end after the call.
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How to compare arrays in JavaScript?
I'd like to compare two arrays... ideally, efficiently. Nothing fancy, just true if they are identical, and false if not. Not surprisingly, the comparison operator doesn't seem to work.
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Why do you need explicitly have the “self” argument in a Python method?
...hing is implied or assumed, parts of the implementation are exposed. self.__class__, self.__dict__ and other "internal" structures are available in an obvious way.
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