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mongodb group values by multiple fields
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207
TLDR Summary
In modern MongoDB releases you can brute force this with $slice just off the basi...
How to make a background 20% transparent on Android
How do I make the background of a Textview about 20% transparent (not fully transparent), where there is a color in the background (i.e. white)?
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Python super() raises TypeError
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answered Jan 28 '09 at 20:48
Serafina BrociousSerafina Brocious
29.3k1111 gold badges8484 silver badges110110 bronze badges
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“unary operator expected” error in Bash if condition
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506
If you know you're always going to use bash, it's much easier to always use the double bracket ...
“git pull” or “git merge” between master and development branches
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105
Be careful with rebase. If you're sharing your develop branch with anybody, rebase can make a m...
Setting an object to null vs Dispose()
...tringBuilder are already eligible
// for garbage collection here!
int y = 10;
DoSomething(y);
// These aren't helping at all!
x = null;
sb = null;
// Assume that x and sb aren't used here
The one time where it may be worth setting a local variable to null is when you're in a loop, and some branc...
How do I select the parent form based on which submit button is clicked?
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edited Nov 22 '08 at 18:15
answered Nov 22 '08 at 18:09
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How to print full stack trace in exception?
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Klesun
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answered Nov 24 '10 at 23:55
JustinJustin
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How to select a node using XPath if sibling node has a specific value?
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answered Jun 11 '13 at 10:47
Jens EratJens Erat
32.5k1515 gold badges6868 silver badges8686 bronze badges
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How to optimize imports automatically after each save in IntelliJ IDEA
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edited Dec 4 '15 at 10:19
Oliv
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answered Jul ...