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IEnumerable to string [duplicate]
...r sequence on a 32-bit release build:
ToArrayString: 00:00:03.1695463
Concat: 00:00:07.2518054
StringBuilderChars: 00:00:03.1335455
StringBuilderStrings: 00:00:06.4618266
static readonly IEnumerable<char> seq = Enumerable.Repeat('a', 300);
static string ToArrayStrin...
Is there a simple way to delete a list element by value?
...element. Use a list comprehension for that.
>>> a = [10, 20, 30, 40, 20, 30, 40, 20, 70, 20]
>>> a = [x for x in a if x != 20]
>>> print(a)
[10, 30, 40, 30, 40, 70]
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How to sleep for five seconds in a batch file/cmd [duplicate]
...MultiplyByZer0
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answered Nov 4 '09 at 8:20
MartinMartin
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How do you set your pythonpath in an already-created virtualenv?
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mdeousmdeous
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Elegant way to invert a map in Scala
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174
Assuming values are unique, this works:
(Map() ++ origMap.map(_.swap))
On Scala 2.8, however,...
How do I find the length of an array?
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Oliver CharlesworthOliver Charlesworth
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Type-juggling and (strict) greater/lesser-than comparisons in PHP
...g NAN is always false is not specific to PHP. It is mandated by the IEEE 754 Standard for Floating-Point Arithmetic (more info).
PHP's == operator is symmetric, i.e. $a == $b and $b == $a are always the same.
PHP's == operator is not transitive, i.e. from $a == $b and $b == $c does not follows $a ==...
What is the best way to tell if a character is a letter or number in Java without using regexes?
... AdamAdam
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实战低成本服务器搭建千万级数据采集系统 - 更多技术 - 清泛网 - 专注C/C++...
...节约客户成本，硬件为普通服务器：E5200 双核 2.5G cpu， 4 G DDR3 1333内存，硬盘 500G SATA 7200转硬盘。数据库为mysql。在这样的条件下我们能否实现这个系统目标？当然如果有更好的硬件不是这个文章阐述的内容。现通过采集、存储...
Why should we typedef a struct so often in C?
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464
As Greg Hewgill said, the typedef means you no longer have to write struct all over the place....