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How can I quickly sum all numbers in a file?
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Just for fun, let's benchmark it:
$ for ((i=0; i<1000000; i++)) ; do echo $RANDOM; done > random_numbers
$ time perl -nle '$sum += $_ } END { print $sum' random_numbers
16379866392
real 0m0.226s
user 0m0.219s
sys 0m...
Why are flag enums usually defined with hexadecimal values
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Another fun fact with the x << y notation. 1 << 10 = KB, 1 << 20 = MB, 1 << 30 = GB and so on. It is really nice if you want to make a 16 KB array for a buffer you can just go var buffer = new byte[16 <<...
Flash CS4 refuses to let go
...n't seem to solve the problem. I'm going to chalk this one up to Adobe bug fun tiem. I'm going to mark it as solved, however.
– Ender
Feb 3 '10 at 19:23
294
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NoClassDefFoundError - Eclipse and Android
...to do was check the darn box for the jar in the "Order and Export" screen. Funny thing is that I only had to do this so that it would work on a Nook Tablet emulator. Did not have a problem on devices or other emulators.
– Luis
Jun 12 '12 at 19:58
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How can building a heap be O(n) time complexity?
...d you mean to start at the bottom of the heap?
– aste123
Dec 16 '15 at 18:14
4
@aste123 No, it is...
Why shouldn't I use mysql_* functions in PHP?
What are the technical reasons for why one shouldn't use mysql_* functions? (e.g. mysql_query() , mysql_connect() or mysql_real_escape_string() )?
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Disable browsers vertical and horizontal scrollbars
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123
function reloadScrollBars() {
document.documentElement.style.overflow = 'auto'; // firefo...
程序员羊皮卷下载版.pdf - 文档下载 - 清泛网 - 专注C/C++及内核技术
...型的三种选择
121 MBA 的几个问题
122 一个假设换回18 万
123 公司对我有恩，离职怎么说得出口
125 找马时，我被“驴”发现了
126 被“驴”开除的Ivy
127 被“驴”加薪留下的Lion
128 左右逢源的Jack
130 第10 章 职场政治
130 有人...
Check to see if a string is serialized?
...ay to determine whether or not a string is the result of the serialize() function?
10 Answers
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JavaScript: How do I print a message to the error console?
...IE. We can work around that with: if (!console.debug){ console.debug = function(args){ console.log(args); } }
– Rovanion
Nov 26 '12 at 10:12
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