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In Firebase, is there a way to get the number of children of a node without loading all the node dat
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Michael Fitzhavey
8111 silver badge44 bronze badges
answered Mar 1 '13 at 2:13
Andrew LeeAndrew Lee
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Understanding NSRunLoop
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211
A run loop is an abstraction that (among other things) provides a mechanism to handle system in...
What's the magic of “-” (a dash) in command-line parameters?
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114
If you mean the naked - at the end of the tar command, that's common on many commands that wan...
What is the difference between active and passive FTP?
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YuantaoYuantao
2,52711 gold badge1414 silver badges1616 bronze badges
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Inheriting class methods from modules / mixins in Ruby
...93C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.69...
base64 encoded images in email signatures
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edited May 23 '17 at 11:54
Community♦
111 silver badge
answered Feb 2 '12 at 9:49
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Declaring abstract method in TypeScript
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answered Nov 11 '12 at 21:28
FentonFenton
193k5555 gold badges338338 silver badges356356 bronze badges
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Does PostgreSQL support “accent insensitive” collations?
...93C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.69...
Reference: Comparing PHP's print and echo
...g weird but valid code:
<?php
print print print print 7; // 7111
At first glance the result may seem odd that the last print statement prints its operand of '7' first. But, if you dig deeper and look at the actual opcodes it makes sense:
line # * op f...
Simplest way to do a fire and forget method in c# 4.0
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111
Not an answer for 4.0, but worth noting that in .Net 4.5 you can make this even simpler with:
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