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What reason is there to use null instead of undefined in JavaScript?
...ff like if(x) ... . Stop it. !x will evaluate to true for an empty string, 0, null, NaN - ie things you probably don't want. If you want to write javascript that isn't awful, always use triple equals === and never use null (use undefined instead). It'll make your life way easier.
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Concurrent vs serial queues in GCD
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edited Dec 1 '15 at 13:50
answered Oct 4 '13 at 11:12
Ste...
Single Sign On across multiple domains [closed]
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answered Sep 5 '08 at 0:07
gromgrom
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Android: Background Image Size (in Pixel) which Support All Devices
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200
The following are the best dimensions for the app to run in all devices. For understanding mult...
Smarty中date_format日期格式化详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... - 当前区域首选的日期时间表达
%C - 世纪值（年份除以 100 后取整，范围从 00 到 99）
%d - 月份中的第几天，十进制数字（范围从 01 到 31）
%D - 和 %m/%d/%y 一样
%e - 月份中的第几天，十进制数字，一位的数字前会加上一个空格（...
When/Why to use Cascading in SQL Server?
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answered Sep 12 '08 at 16:43
Joel CoehoornJoel Coehoorn
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Eclipse IDE for Java - Full Dark Theme
...ortunately :(
– vach
Jan 16 '14 at 10:23
24
Didn't really work for me, the background is off blac...
float:left; vs display:inline; vs display:inline-block; vs display:table-cell;
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201
Of the options you asked about:
float:left;
I dislike floats because of the need to have addi...
When should I use Write-Error vs. Throw? Terminating vs. non-terminating errors
...is is best illustrated with code:
# A foreach loop.
foreach ( $i in (1..10) ) { Write-Host $i ; if ($i -eq 5) { return } }
# A for loop.
for ($i = 1; $i -le 10; $i++) { Write-Host $i ; if ($i -eq 5) { return } }
Output for both:
1
2
3
4
5
One gotcha here is using return with ForEach-Object. ...
How to select multiple rows filled with constants?
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208
SELECT 1, 2, 3
UNION ALL SELECT 4, 5, 6
UNION ALL SELECT 7, 8, 9
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