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Or versus OrElse
...rue - so we don't need to evaluate the second term.
OrElse knows this, so doesn't try and evaluate temp = 0 once it's established that temp Is DBNull.Value
Or doesn't know this, and will always attempt to evaluate both terms. When temp Is DBNull.Value, it can't be compared to zero, so it falls ove...
NSUserDefaults removeObjectForKey vs. setObject:nil
...overloaded functions which accept nil, Swift has to choose one, but setURL doesn't behave the same.
– Richard Venable
Jun 1 '18 at 2:16
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'dragleave' of parent element fires when dragging over children elements
... This is the best solution so far.The only problem is this code doesn't work when you add a file, remove it and drag another file over it. Only after raising HoverEnd and raising HoverStart again this code works again.
– MysticEarth
May 7 '15 at 20:4...
How to create id with AUTO_INCREMENT on Oracle?
..._GUID returns a GUID-- a globally unique ID. A SYS_GUID is a RAW(16). It does not generate an incrementing numeric value.
If you want to create an incrementing numeric key, you'll want to create a sequence.
CREATE SEQUENCE name_of_sequence
START WITH 1
INCREMENT BY 1
CACHE 100;
You wou...
Which MySQL data type to use for storing boolean values
Since MySQL doesn't seem to have any 'boolean' data type, which data type do you 'abuse' for storing true/false information in MySQL?
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Copy table without copying data
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This does not seem to copy the constraints or keys
– Timo Huovinen
Oct 27 '13 at 8:41
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Is there a built in function for string natural sort?
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@user19087: In fact it does work, because re.split('([0-9]+)', '0foo') returns ['', '0', 'foo']. Because of that, strings will always be on even indexes and integers on odd indexes in the array.
– Florian Kusche
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Comma in C/C++ macro
...d >=, macro expansion can't ignore commas inside angle brackets like it does within parentheses. (This is also a problem for square brackets and braces, even though those usually occur as balanced pairs.) You can enclose the macro argument in parentheses:
FOO((std::map<int, int>), map_va...
How do I move a Git branch out into its own repository?
...-b master solved my problem it was on the screen error: src refspec master does not match any. (only wonder why I didn't see the branch name I was at) Thank you
– kangkyu
Oct 31 '15 at 6:55
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Set a default font for whole iOS app?
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does not seems to work with UILabels that set text-style (bold,headline,title, etc)... only works with font that have a specific size and system font set. @nahung89
– aviran
Aug 7 '18 at...