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How can I check for “undefined” in JavaScript? [duplicate]
...terested in finding out whether a variable has been declared regardless of its value, then using the in operator is the safest way to go. Consider this example:
// global scope
var theFu; // theFu has been declared, but its value is undefined
typeof theFu; // "undefined"
But this may not be the i...
Multiple inheritance/prototypes in JavaScript
...ome to a point where I need to have some sort of rudimentary multiple inheritance happening in JavaScript. (I'm not here to discuss whether this is a good idea or not, so please kindly keep those comments to yourself.)
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Check if directory mounted with bash
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Running the mount command without arguments will tell you the current mounts. From a shell script, you can check for the mount point with grep and an if-statement:
if mount | grep /mnt/md0 > /dev/null; then
echo "yay"
else
echo "nay"
fi
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How to avoid “RuntimeError: dictionary changed size during iteration” error?
I have checked all of the other questions with the same error yet found no helpful solution =/
11 Answers
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Reducing MongoDB database file size
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UPDATE: with the compact command and WiredTiger it looks like the extra disk space will actually be released to the OS.
UPDATE: as of v1.9+ there is a compact command.
This command will perform a compaction "in-line". It will stil...
How to show soft-keyboard when edittext is focused
I want to automatically show the soft-keyboard when an EditText is focused (if the device does not have a physical keyboard) and I have two problems:
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Why is there no tuple comprehension in Python?
...follow
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edited Jun 18 '19 at 0:14
Tom Zych
11.9k99 gold badges3131 silver badges5151 bronze badges
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RSpec vs Cucumber (RSpec stories) [closed]
...spec-stories)? I know how both work and actively use specs, of course. But it still feels weird to use Cucumber. My current view on this, is that it's convenient to use Cucumber when you're implementing application for the client and do not understand how the whole system is supposed to work yet.
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My images are blurry! Why isn't WPF's SnapsToDevicePixels working?
...ider trying a new property available now in WPF4. Leave the RenderOptions.BitmapScalingMode to HighQuality or just don't declare it.
NearestNeighbor worked for me except it led to jaggy bitmaps when zooming in on the application. It also didn't seem to fix any glitches where icons were sizing in we...
What's a good IDE for Python on Mac OS X? [closed]
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Have tried many different (Kate, Eclipse, Scite, Vim, Komodo): each one have some glitches, either limited functions, or slow and unresponsive. Final choice after many years: Emacs + ropemacs + flymake. Rope project file open dialog is extremely quick. Rope refactoring...