大约有 13,300 项符合查询结果（耗时：0.0282秒） [XML]
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
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How to reshape data from long to wide format
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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
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answered Jun 20 '14 at 10:01
sidneysidney
2,57633 gold badges2323 silver badges4141 bronze badges
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Any way to select without causing locking in MySQL?
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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?
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llogan
71.6k2020 gold badges140140 silver badges167167 bronze badges
answered Dec 11 '14 at 1:18
Paul IrishPaul Irish
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Limit File Search Scope in Sublime Text 2
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answered May 5 '14 at 19:01
Daniel FlippanceDaniel Flippance
6,24722 gold badges3737 silver badges5151 bronze badges
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json_encode is returning NULL?
...n use to identify the problem in the function's documentation. Currently (2012.01.19), the identifiers are:
0 = JSON_ERROR_NONE
1 = JSON_ERROR_DEPTH
2 = JSON_ERROR_STATE_MISMATCH
3 = JSON_ERROR_CTRL_CHAR
4 = JSON_ERROR_SYNTAX
5 = JSON_ERROR_UTF8
These can change in future versions, so it's better...
MySQL case insensitive select
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501
They are case insensitive, unless you do a binary comparison.
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