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How to “test” NoneType in python?
I have a method that sometimes returns a NoneType value. So how can I question a variable that is a NoneType? I need to use if method, for example
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How to check if a symlink exists
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Just wanted to add a little something to the tip given by @Sam; when doing these sorts of operations make sure to put your file name in quotes, to prevent issues with whitespaces. e.g. if [ ! -L "$mda" ]; then ... fi (note: if [ ! ... ] and if ! [ ... ] ...
Can I query MongoDB ObjectId by date?
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Popping Timestamps into ObjectIds covers queries based on dates embedded in the ObjectId in great detail.
Briefly in JavaScript code:
/* This function returns an ObjectId embedded with a given datetime */
/* Accepts both Date object an...
Webfont Smoothing and Antialiasing in Firefox and Opera
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Regex for string not ending with given suffix
...t been able to find a proper regex to match any string not ending with some condition. For example, I don't want to match anything ending with an a .
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Checking if object is empty, works with ng-show but not from controller?
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This requirement isn't in your question, so my answer is based on the over simplified scenario. If you really need an object to start with, you can try $scope.items = {available: false}, and ng-show="items.available", and in your control...
“Private” (implementation) class in Python
...now the underscore rule extended to classes. I do not want to clutter my namespace when importing, so this behavior is what I was looking for. Thanks!
– oparisy
Feb 15 '09 at 19:52
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How to draw a custom UIView that is just a circle - iPhone app
...is literally just a ball (a 2D circle)? Would I just override the drawRect method? And can someone show me the code for drawing a blue circle?
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Get The Current Domain Name With Javascript (Not the path, etc.)
I plan on buying two domain names for the same site. Depending on which domain is used I plan on providing slightly different data on the page. Is there a way for me to detect the actual domain name that the page is loading from so that I know what to change my content to?
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How can I scan barcodes on iOS?
...create a payed app that uses Zbar. Is that possible under the licence agreement ?
– Radu
Apr 21 '11 at 13:36
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