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Replace a value if null or undefined in JavaScript
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Is there an equivalent for this in Groovy?
– user6123723
Feb 21 '18 at 20:03
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Coloring white space in git-diff's output
Regarding code formatting I'm kind of purist :). I very often remove unnecessary white spaces (lines with only ws, ws at the end of lines etc). I even have set vim to show that kind of lines colored to red.
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Specifying and saving a figure with exact size in pixels
...igure with a certain pixel size, you need to know the DPI of your monitor. For example this link will detect that for you.
If you have an image of 3841x7195 pixels it is unlikely that you monitor will be that large, so you won't be able to show a figure of that size (matplotlib requires the figure ...
The type 'string' must be a non-nullable type in order to use it as parameter T in the generic type
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The Nullable<T> type requires that T is a non-nullable value type, for example int or DateTime. Reference types like string can already be null. There would be no point in allowing things like Nullable<string> so it is disallowed.
Also if you are using C# 3.0 or later you can simplify...
filter items in a python dictionary where keys contain a specific string
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How about a dict comprehension:
filtered_dict = {k:v for k,v in d.iteritems() if filter_string in k}
One you see it, it should be self-explanatory, as it reads like English pretty well.
This syntax requires Python 2.7 or greater.
In Python 3, there is only dict.items(), not...
Run a JAR file from the command line and specify classpath
...ot "include" needed jar files into another jar file. Sure you can. If it's for internal use (ie, you expect the user to have some technical skill etc.) you can just ask that step 1, before attempting to run the jar, is to run unzip MyJar.jar lib/*.jar. Then, as you suggest, they can run java -cp MyJ...
How to bind a List to a ComboBox?
...l not be able to access the value and instead will display the object type for each line in the combo box.
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git-checkout older revision of a file under a new name
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You can use "git show" for that:
prompt> git show HEAD^:main.cpp > old_main.cpp
(Note that there is colon [:] character between HEAD^ and main.cpp.) The <revision>:<path> syntax is described in git rev-parse manpage, next to l...
Disable ALL CAPS menu items in Visual Studio 2013
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Yes - in the new Visual Studio 2013 (as in VS 2012), MS reinforced their design decision to make ALL CAPS MENU ITEMS the default. The methods for reverting the menu style are almost the same methods used for Visual Studio 2012, which has been discussed before.
Update (after Visual St...
Breaking up long strings on multiple lines in Ruby without stripping newlines
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Maybe this is what you're looking for?
string = "line #1"\
"line #2"\
"line #3"
p string # => "line #1line #2line #3"
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