大约有 40,000 项符合查询结果（耗时：0.0518秒） [XML]
How do you convert an entire directory with ffmpeg?
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edited Jun 25 '19 at 16:05
tripleee
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an...
RuntimeWarning: DateTimeField received a naive datetime
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answered Nov 20 '13 at 20:16
kravietzkravietz
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What is the size of column of int(11) in mysql in bytes?
...r what length is specified.
TINYINT = 1 byte (8 bit)
SMALLINT = 2 bytes (16 bit)
MEDIUMINT = 3 bytes (24 bit)
INT = 4 bytes (32 bit)
BIGINT = 8 bytes (64 bit).
The length just specifies how many characters to pad when selecting data with the mysql command line client. 12345 stored as int(3) will...
How to use Active Support core extensions
...port/all'
=> true
irb(main):002:0> 1.week.ago
=> 2010-11-14 17:56:16 -0700
irb(main):003:0>
For 1.8.7:
rvm 1.8.7
irb -f
irb(main):001:0> require 'rubygems'
=> true
irb(main):002:0> require 'active_support/all'
=> true
irb(main):003:0> 1.week.ago
=> Sun Nov 14 17:54:...
Which is better, number(x) or parseFloat(x)?
...seFloat does not:
parseFloat('0x10'); // => 0
Number('0x10'); // => 16
But Number acts weird with empty strings or strings containing only white space:
parseFloat(''); // => NaN
Number(''); // => 0
parseFloat(' \r\n\t'); // => NaN
Number(' \r\n\t'); // => 0
On the whole, I fi...
find without recursion
...wants.
– eldarerathis
Oct 13 '10 at 16:00
1
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How to find the key of the largest value hash?
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edited May 29 '18 at 16:13
Paul Pettengill
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a...
SQL Server Profiler - How to filter trace to only display events from one database?
...lzar Nazim
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8
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MongoDB inserts float when trying to insert integer
...re/shell-types
– Yadu
Sep 19 '13 at 16:31
12
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PowerShell and the -contains operator
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answered Sep 18 '13 at 16:38
KevKev
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