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How can I check whether an array is null / empty?
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218
There's a key difference between a null array and an empty array. This is a test for null.
in...
How to show current year in view?
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249
<%= Time.current.year %>
http://pleac.sourceforge.net/pleac_ruby/datesandtimes.html
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How to print third column to last column?
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edited Jan 15 '14 at 20:11
Nathan
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answered ...
How to define a function in ghci across multiple lines?
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125
For guards (like your example), you can just put them all on one line and it works (guards do n...
Re-raise exception with a different type and message, preserving existing information
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Python 3 introduced exception chaining (as described in PEP 3134). This allows, when raising a...
How to create a custom string representation for a class object?
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Implement __str__() or __repr__() in the class's metaclass.
class MC(type):
def __repr__(sel...
Remove element by id
...o about extending the DOM read this article.
EDIT: Reviewing my answer in 2019, node.remove() has come to the rescue and can be used as follows (without the polyfill above):
document.getElementById("my-element").remove();
or
[...document.getElementsByClassName("my-elements")].map(n => n &...
Jar Mismatch Found 2 versions of android-support-v4.jar in the dependency list
I am trying to create 2 versions of an Android app (free/paid). I have an Android Library that contains files common to both. I created a new Android project and am trying to use the Library but get the error below:
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Is it safe to delete a NULL pointer?
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269
delete performs the check anyway, so checking it on your side adds overhead and looks uglier. ...