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How to delete migration files in Rails 3
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CSS \9 in width property
...ld be 300 pixels wide.
More info
EDIT:
This answer was written in 2011. It should now be noted that this hack also works in IE 10.
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How to keep environment variables when using sudo
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491
First you need to export HTTP_PROXY. Second, you need to read man sudo carefully, and pay attent...
How to make the division of 2 ints produce a float instead of another int?
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313
Just cast one of the two operands to a float first.
v = (float)s / t;
The cast has higher pr...
深入浅出计算机字符集编码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...够验证通过，正则表达式为“^(([\x20-\x7e])|(\x8e[\xa6-\xdf])){1,32}$“。现在问题是UT测试代码能够通过，而前台输入则不能。
此时若后台采用的是JAVA编程，问题便很容易解决直接用destStr = new String(sourceStr.getByte(“UTF-8”), “EUC-JP”)...
Using sections in Editor/Display templates
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189
You could proceed with a conjunction of two helpers:
public static class HtmlExtensions
{
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How to Batch Rename Files in a macOS Terminal?
...f there's a chance that your filenames start with -, place -- before them[1]:
mv -- "$f" "${f/_*_/_}"
Note: echo is prepended to mv so as to perform a dry run. Remove it to perform actual renaming.
You can run it from the command line or use it in a script.
"${f/_*_/_}" is an application of bas...
SQL - Update multiple records in one query
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177
Try either multi-table update syntax
UPDATE config t1 JOIN config t2
ON t1.config_name =...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
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151
I have marked this as a community wiki so feel free to edit at your leisure.
What exactly is ...
UIDevice uniqueIdentifier deprecated - What to do now?
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