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PHP完美实现GIF动画缩略图 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...mage('old_' . $i++ . '.gif');
}
?>
选择二：用ImageMagick提供的convert命令：
shell> convert old.gif old_%d.gif
结果得到GIF动画各帧示意图如下所示：
GIF动画各帧示意图
可以明显的看到，GIF动画为了压缩，会以第一帧为模板，其余各帧...
javascript toISOString() ignores timezone offset [duplicate]
I am trying to convert Twitter datetime to a local iso-string (for prettyDate) now for 2 days. I'm just not getting the local time right..
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Reading InputStream as UTF-8
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If you want to convert a BufferedReader into a string, use Apache Commons, do not reinvent the wheal: String myStr = org.apache.commons.io.IOUtils.toString( myBufferedReaderInstance);
– Jaime Marín
Oc...
How to find out line-endings in a text file?
...e testfile2.txt
testfile2.txt: ASCII text, with CRLF line terminators
To convert from "DOS" to Unix:
$ dos2unix testfile2.txt
To convert from Unix to "DOS":
$ unix2dos testfile1.txt
Converting an already converted file has no effect so it's safe to run blindly (i.e. without testing the forma...
RabbitMQ message size and types
...nt to the queue with two preconditions:
The thing you are sending can be converted to and from a bytestring
The consumer knows exactly what it is getting and how to convert it to the original object
Strings are pretty easy, they have a built in method for converting to and from bytes. If you k...
Subtract one day from datetime
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This should work.
select DATEADD(day, -1, convert(date, GETDATE()))
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In Python, how do you convert seconds since epoch to a `datetime` object?
... 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix...
How to estimate how much memory a Pandas' DataFrame will need?
...718016/1024/1024 = 392.6, so df.info(memory_usage="deep") may use 2^10 to convert byte to MB, which makes me confused. Thanks for your help anyway :D.
– Catbuilts
Oct 30 '18 at 4:01
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How to define an empty object in PHP
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$o=(object)NULL; -- If an object is converted to an object, it is not modified. If a value of any other type is converted to an object, a new instance of the stdClass built-in class is created. If the value was NULL, the new instance will be empty. Arrays conve...
How to calculate the angle between a line and the horizontal axis?
...tant to note that Math.sin and Math.cos take radians so you do not need to convert the result into degrees! So ignore the * 180 / PI bit. It took me 4 hours to find that out. :)
– sidonaldson
Oct 8 '13 at 21:26
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