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Check if an array is empty or exists
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if (typeof image_array !== 'undefined' && image_array.length > 0) {
// the array is defined and has at least one element
}
Your problem may be happening due to a mix of implicit global variables and variable hoisting. Make sure you use var whenever declaring a variable:
<?php e...
Firebug says “No Javascript on this page”, even though JavaScript does exist on the page
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As of Firefox version 50, it seems that Firebug will no longer work as Mozilla are migrating to Firefox Devtools. The tab Tools/Web Developer has a 'debugger' option. See this page for a discussion on the migration. Read all the posts dated 19 Nov...
Better way to check variable for null or empty string?
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10 Answers
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Views vs Components in Ember.js
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170
Ember.View
An Ember.View is currently limited to the tags that are created for you by the W3C. B...
How to set xlim and ylim for a subplot in matplotlib [duplicate]
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260
You should use the OO interface to matplotlib, rather than the state machine interface. Almost ...
Programmatically fire button click event?
...anZaky German
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Exclude folder from search but not from the project list
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answered Sep 22 '14 at 11:10
JustinasJustinas
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Making 'git log' ignore changes for certain paths
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It is implemented now (git 1.9/2.0, Q1 2014) with the introduction pathspec magic :(exclude) and its short form :! in commit ef79b1f and commit 1649612, by
Nguyễn Thái Ngọc Duy (pclouds), documentation can be found here.
You now can log everything excep...
/usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.15' not found
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gcc/trunk/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6.0.15
I copied it in to /usr/lib and redirected libstdc++.so.6 to point to the new one, and now everything works.
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How to get item's position in a list?
... 3, 1, 2, 1, 6]
>>> [i for i,x in enumerate(testlist) if x == 1]
[0, 5, 7]
Update:
Okay, you want a generator expression, we'll have a generator expression. Here's the list comprehension again, in a for loop:
>>> for i in [i for i,x in enumerate(testlist) if x == 1]:
... p...