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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...1. awk的语法有两种形式
awk [options] 'script' var=value file(s)
awk [options] -f scriptfile var=value file(s)
2.2. 命令选项
-F fs or --field-separator fs
指定输入文件折分隔符，fs是一个字符串或者是一个正则表达式...
Your content must have a ListView whose id attribute is 'android.R.id.list'
I have created an xml file like this:
7 Answers
7
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Convert RGBA PNG to RGB with PIL
...using PIL to convert a transparent PNG image uploaded with Django to a JPG file. The output looks broken.
7 Answers
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java.lang.IllegalStateException: Cannot (forward | sendRedirect | create session) after response has
...rvlets the right way.
Another probable cause is that the servlet writes a file download to the response after which e.g. a forward() is called.
protected void doXxx() {
out.write(bytes);
// ...
forward(); // Fail!
}
This is technically not possible. You need to remove the forward() ca...
Hidden features of Android development?
...e as adding a new annotated subfolder (Eg. values-fr) that contains an XML file with strings in a different language (Eg. French). Android will choose the right folder at runtime for you.
The same resources framework lets you use alternate layouts for different hardware configurations, screen pixe...
Why did Rails4 drop support for “assets” group in the Gemfile
...in the asset pipeline were properly placed in the assets group of the Gemfile:
3 Answers
...
Visual Studio Editor does not underline errors anymore
...decides to stop underlining error while im typing. However, if I close the file tab and reopen, it suddenly undelines the error.
For example:
class A {
public int x;
s;
}
should obvsiouly give an error for that lonely 's' symbol. But, VS doesn't underline it until I close and reopen this file ...
No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClie
... copy over the SQL provider when the only reference to it is in the config file?
– Joel McBeth
Nov 3 '15 at 14:56
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show 3 more comments
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Things possible in IntelliJ that aren't possible in Eclipse?
...ined or shows a menu if there are more than one place, including other .js files and JS code in HTML or JSP files.
Autocomplete for many languagues
Hibernate
Autocomplete in HSQL expressions, in Hibernate configuration (including class, property and DB column names), in Spring configuration
<...
Visual Studio loading symbols
...rosoft's, to download missing symbols. This takes three HTTP hits for each file it can't find on every startup - you can sometimes see this in the status bar at the bottom or in e.g. Fiddler. You can see which modules have loaded symbols in Debug, Windows, Modules whilst you're debugging.
Symbols m...