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How should one go about choosing a default TCP/IP port for a new service?
...e to have multiple developers using their own localized builds at the same time.
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Test if number is odd or even
...else{
// Odd Number
}
Or to make it more faster (beats mod operator at times) :
$even = array(0, 2, 4, 6, 8);
if(in_array(substr($number, -1),$even)){
// Even Number
}else{
// Odd Number
}
Here is the time test as a proof to my findings.
...
转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
转：postfix安装Q&A 原文地址：http: bbs.chinaunix.net viewthread.php?tid=770141执照wangmingda老大的资料安装成功postfix（地址在这里http: www.extmail....
原文地址：http://bbs.chinaunix.net/viewthread.php?tid=770141
执照wangmingda老大...
How to determine if a number is odd in JavaScript
... I'm not sure if my test is accurate, but the bitwise AND seems to be 40 times slower than the modulo operator for a fixed number and 2 times slower for a random number: jsperf.com/odd-or-even
– Blender
Aug 12 '12 at 22:59
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How to set a JavaScript breakpoint from code in Chrome?
... A nice trick is to trigger the debugger after a few seconds: setTimeout(function(){debugger;}, 3000);
– Shahar
Jul 8 '14 at 13:02
30
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How can I change the color of a Google Maps marker?
I'm using the Google Maps API to build a map full of markers, but I want one marker to stand out from the others. The simplest thing to do, I think, would be to change the color of the marker to blue, instead of red. Is this a simple thing to do or do I have to create a whole new icon somehow? If I ...
Standardize data columns in R
I have a dataset called spam which contains 58 columns and approximately 3500 rows of data related to spam messages.
15 ...
Practicing BDD with python [closed]
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windows users considering lettuce should know, at the time of writing, support for that OS is not straightforward.
– leonigmig
Mar 6 '11 at 13:41
7
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SQL-Server: The backup set holds a backup of a database other than the existing
..."... yes, that solves it. (But why didn't I get this problem all the other times I did the same thing? And didn't we only start doing that pre-create in the first place as a workaround for some other inexplicable error message? :])
– Reg Edit
May 12 '14 at 15:1...
UICollectionView auto scroll to cell at IndexPath
...ary flash of the unscrolled view to be visible.
And, if you scroll every time through viewDidLayoutSubviews, the user won't be able to manually scroll because some collection layouts cause subview layout every time you scroll.
Here's what I found works reliably:
Objective C :
- (void)viewDidLa...