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Can I have an IF block in DOS batch file?
...neously upon exiting the code block.
I was able to overcome this problem by re-writing the if block to only execute one command - goto - and adding a few labels. Its clunky, and I don't much like it, but at least it works.
if %ERRORLEVEL%==0 goto :error0
goto :endif
:error0
set var1=blue
set var...
How can I pass command-line arguments to a Perl program?
...
You can access them directly, by assigning the special variable @ARGV to a list of variables.
So, for example:
( $st, $prod, $ar, $file, $chart, $e, $max, $flag ,$id) = @ARGV;
perl tmp.pl 1 2 3 4 5
...
Detect enter press in JTextField
...ᵁᴵᴰᴼ: KeyListeners have many shortcomings, which are taken care of by to a greater extent by KeyBindings, such as, focus related, copy/paste related and many many more. It is to be avoided, for trivial tasks, such as, as asked in OP.
– nIcE cOw
May 3 '...
How to make IPython notebook matplotlib plot inline
...as plt
You can also always start all your IPython kernels in inline mode by default by setting the following config options in your config files:
c.IPKernelApp.matplotlib=<CaselessStrEnum>
Default: None
Choices: ['auto', 'gtk', 'gtk3', 'inline', 'nbagg', 'notebook', 'osx', 'qt', 'qt4', ...
JavaScript checking for null vs. undefined and difference between == and ===
...and `""`, and `0`, and `NaN`, and [of course] `false`)
}
This is defined by ToBoolean in the spec.
...and what is the difference between the null and undefined?
They're both values usually used to indicate the absence of something. undefined is the more generic one, used as the default value...
Text vertical alignment in WPF TextBlock
...The TextBlock doesn't support vertical text alignment.
I work around this by wrapping the text block with a Grid and setting HorizontalAlignment="Stretch" and VerticalAlignment="Center".
Like this:
<Grid>
<TextBlock
HorizontalAlignment="Stretch"
VerticalAlignment="Ce...
When and why would you seal a class?
...th sealing classes in reused libraries, especially if they're beind reused by third parties and then reintegrated (via MEF) into the codebase. Your codebase may not inherit a given class but third parties will.
– Louis Kottmann
Feb 12 '15 at 11:32
...
How do you delete an ActiveRecord object?
...delete_all with conditions has been deprecated in Rails 5.1 - see guides.rubyonrails.org/5_1_release_notes.html
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How to change navbar collapse threshold using Twitter bootstrap-responsive?
...67px as the minimum threshold, though I could probably reduce that further by creating a custom container for the navbar that was not affected by @media (max-width: 767px). Hopefully Bootstrap (or bootstrap-sass) will one day include a means to use variables to set the thresholds, but I think that w...
Internet Explorer 11 disable “display intranet sites in compatibility view” via meta tag not working
...e Tools menu in IE.
However Enterprise Mode should in theory be overridden by the X-UA-Compatible tag, but IE might have a bug...
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