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How do I verify/check/test/validate my SSH passphrase?
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You can verify your SSH key passphrase by attempting to load it into your SSH agent. With OpenSSH this is done via ssh-add.
Once you're done, remember to unload your SSH passphrase from the terminal by running ssh-add -d.
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How do I select child elements of any depth using XPath?
...Simply use:
//form[@id='myform']//input[@type='submit']
The // shortcut can also be used inside an expression.
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What predefined macro can I use to detect clang?
I'm trying to detect the compiler used to compile my source code. I can easily find predefined macros to check for MSVC or GCC (see http://predef.sourceforge.net/ for example), but I cannot find any macro to check for clang.
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Is it safe to assume strict comparison in a JavaScript switch statement?
I have a variable that can either be boolean false , or an integer (including 0). I want to put it in a switch statement like:
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Stream.Seek(0, SeekOrigin.Begin) or Position = 0
...when setting a relative position. Both are provided for convenience so you can choose one that fits the style and readability of your code. Accessing Position requires the stream be seekable so they're safely interchangeable.
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Remove the error indicator from a previously-validated EditText widget
...tView = ...; // fetch it as appropriate
textView.setError(null);
}
Because as mentioned in the documentation:
If the error is null, the error message and icon will be cleared.
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How do I ignore the authenticity token for specific actions in Rails?
...authenticity_token
For previous versions:
For individual actions, you can do:
protect_from_forgery :only => [:update, :destroy, :create]
#or
protect_from_forgery :except => [:update, :destroy, :create]
For an entire controller, you can do:
skip_before_action :verify_authenticity_token...
Adding services after container has been built
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Yes you can, using the Update method on ContainerBuilder:
var newBuilder = new ContainerBuilder();
newBuilder.Register...;
newBuilder.Update(existingContainer);
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git - diff of current changes before committing
...2 (most chapters; it explains the model behind Git and answers most of typical questions)
and then immediately http://gitready.com/ (usage tips).
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Configuration With Same Name Already Exists
...he most overlooked checkbox in Visual Studio!
– Rebecca
Feb 25 '14 at 13:24
4
Years has this plag...