大约有 13,114 项符合查询结果（耗时：0.0201秒） [XML]
What is the maximum length of a valid email address?
...tually 254.
– Carl
Jul 23 '09 at 17:01
31
Where is the lovely article?
– Bo...
How to mark-up phone numbers?
...
It's 2014 and Tel: now works for Skype. But if you wanted to initiate a call to the Skype Echo / Sound Test Service, the link would be <a href="skype:echo123?call">Call the Skype Echo / Sound Test Service</a> from msdn...
How can I find the last element in a List?
...hichever retrieval mechanism you decide to use.
– 0b101010
Nov 7 '14 at 16:23
4
...
How to reshape data from long to wide format
...
The new (in 2014) tidyr package also does this simply, with gather()/spread() being the terms for melt/cast.
Edit: Now, in 2019, tidyr v 1.0 has launched and set spread and gather on a deprecation path, preferring instead pivot_wider and ...
Check with jquery if div has overflowing elements
...
answered Jun 20 '14 at 10:01
sidneysidney
2,57633 gold badges2323 silver badges4141 bronze badges
...
Any way to select without causing locking in MySQL?
...
Found an article titled "MYSQL WITH NOLOCK"
https://web.archive.org/web/20100814144042/http://sqldba.org/articles/22-mysql-with-nolock.aspx
in MS SQL Server you would do the following:
SELECT * FROM TABLE_NAME WITH (nolock)
and the MYSQL equivalent is
SET SESSION TRANSACTION ISOLATION LEVEL R...
How can I format a decimal to always show 2 decimal places?
...on:
>>> TWOPLACES = Decimal(10) ** -2 # same as Decimal('0.01')
>>> # Round to two places
>>> Decimal('3.214').quantize(TWOPLACES)
Decimal('3.21')
>>> # Validate that a number does not exceed two places
>>> Decimal('3.21').quantize(TWOPLACES, conte...
How to find if an array contains a specific string in JavaScript/jQuery? [duplicate]
...?
– SuperUberDuper
Mar 26 '15 at 15:01
4
@SuperUberDuper: That checks for if an object key exists...
How can I extract audio from video with ffmpeg?
...
llogan
71.6k2020 gold badges140140 silver badges167167 bronze badges
answered Dec 11 '14 at 1:18
Paul IrishPaul Irish
...
Limit File Search Scope in Sublime Text 2
...
answered May 5 '14 at 19:01
Daniel FlippanceDaniel Flippance
6,24722 gold badges3737 silver badges5151 bronze badges
...