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C#: Assign same value to multiple variables in single statement
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If you want to test it, try Console.WriteLine(num = 5);. (Disclaimer: I haven't yet)
– Arlen Beiler
May 9 '13 at 19:36
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How do HashTables deal with collisions?
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If chaining is used, when given a key, how do we know which item to get back?
– ChaoSXDemon
Oct 10 '15 at 4:04
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Mongoose subdocuments vs nested schema
...re resources for tracking subdocs.
Alternate declaration syntax
New in v3 If you don't need access to the sub-document schema instance, you may also declare sub-docs by simply passing an object literal [...]
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Which characters need to be escaped when using Bash?
... 67 - g
Where first field is hexa value of byte, second contain E if character need to be escaped and third field show escaped presentation of character.
Why ,?
You could see some characters that don't always need to be escaped, like ,, } and {.
So not always but sometime:
echo test 1, 2, 3...
iPhone UITextField - Change placeholder text color
...iOS 6, it's possible to assign a color to the placeholder text like this:
if ([textField respondsToSelector:@selector(setAttributedPlaceholder:)]) {
UIColor *color = [UIColor blackColor];
textField.attributedPlaceholder = [[NSAttributedString alloc] initWithString:placeholderText attributes:@{N...
Getting the name of the currently executing method
...at a lot of work has gone into making HotSpot very reliable. You need to know, though, in case you want your code to not rely on the behavior of a specific JVM.
– Thorbjørn Ravn Andersen
Apr 15 '13 at 8:53
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How to convert image to byte array
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instead of System.Drawing.Imaging.ImageFormat.Gif, you can use imageIn.RawFormat
– S.Serpooshan
Nov 26 '16 at 12:31
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Convert file path to a file URI?
...- somehow it decides that some sequences should be decoded but not others. Now we could just prefix with "file:///" ourselves, however this fails to take UNC paths like \\remote\share\foo.txt into account - what seems to be generally accepted on Windows is to turn them into pseudo-urls of the form f...
Connect Java to a MySQL database
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Hi @SeanOwen I wonder that, why do we close rs and stmt? Why not just conn?
– Kamuran Sönecek
Apr 14 '16 at 6:37
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Find MongoDB records where array field is not empty
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If you also have documents that don't have the key, you can use:
ME.find({ pictures: { $exists: true, $not: {$size: 0} } })
MongoDB don't use indexes if $size is involved, so here is a better solution:
ME.find({ pictures:...