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“f” after number
...ective-C; putting an f on the end - 0.0f - declares the constant as a (32-bit) float.)
CGRect frame = CGRectMake(0, 0, 320, 50);
uses ints which will be automatically converted to floats.
In this case, there's no (practical) difference between the two.
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Tar a directory, but don't store full absolute paths in the archive
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tar -cjf site1.tar.bz2 -C /var/www/site1 .
In the above example, tar will change to directory /var/www/site1 before doing its thing because the option -C /var/www/site1 was given.
From man tar:
OTHER OPTIONS
-C, --directory DIR
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Can I avoid the native fullscreen video player with HTML5 on iPhone or android?
...he HTML5 tag and JavaScript code that renders other content synchronized with the running video. It works great in desktop browsers: Firefox, Chrome, and Safari. On an iPhone or a DroidX, the native video player pops up and takes over the screen, thus obscuring the other dynamic content that I want...
How many random elements before MD5 produces collisions?
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Probability of just two hashes accidentally colliding is 1/2128 which is 1 in 340 undecillion 282 decillion 366 nonillion 920 octillion 938 septillion 463 sextillion 463 quintillion 374 quadrillion 607 trillion 431 billion 768 millio...
What does “async: false” do in jQuery.ajax()?
Specifically, how does it differ from the default ( async: true ) ?
7 Answers
7
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Auto-indent in Notepad++
We always write code like this formal:
16 Answers
16
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Select N random elements from a List in C#
I need a quick algorithm to select 5 random elements from a generic list. For example, I'd like to get 5 random elements from a List<string> .
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preferredStatusBarStyle isn't called
I followed this thread to override -preferredStatusBarStyle , but it isn't called.
Are there any options that I can change to enable it? (I'm using XIBs in my project.)
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how to detect search engine bots with php?
...follow
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edited Mar 24 '09 at 13:57
answered Mar 24 '09 at 13:37
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What is the best way to compute trending topics or tags?
Many sites offer some statistics like "The hottest topics in the last 24h". For example, Topix.com shows this in its section "News Trends". There, you can see the topics which have the fastest growing number of mentions.
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