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Is #pragma once part of the C++11 standard?
...rtable way to avoid multiple header inclusions in C++ was/is to use the #ifndef - #define - #endif pre-compiler directives scheme also called macro-guard scheme (see code snippet below).
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How do I make Git treat a file as binary?
...attributes. Put something like this in your .gitattributes file (create it if it doesn't exist):
*.sln binary
*.suo binary
*.vcxproj binary
Here binary is actually a predefined macro, equivalent to -diff -merge -text.
If you want to still be able to see the diff, you can use:
*.sln -merge -text...
Environment variable to control java.io.tmpdir?
...t_temp_directory() functions return a static value of /tmp/.
I don't know if the actual JDK6 follows these exact conventions, but by the behavior on each of the listed platforms, it seems like they do.
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Convert Json Array to normal Java list
...ayList<String>();
JSONArray jsonArray = (JSONArray)jsonObject;
if (jsonArray != null) {
int len = jsonArray.length();
for (int i=0;i<len;i++){
list.add(jsonArray.get(i).toString());
}
}
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What's the canonical way to check for type in Python?
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To check if o is an instance of str or any subclass of str, use isinstance (this would be the "canonical" way):
if isinstance(o, str):
To check if the type of o is exactly str (exclude subclasses):
if type(o) is str:
The followi...
How to put a new line into a wpf TextBlock control?
... a new line in the data:
<data>Foo bar baz
baz bar</data>
If that does not work you might need to parse the string manually.
If you need direct XAML that's easy by the way:
<TextBlock>
Lorem <LineBreak/>
Ipsum
</TextBlock>
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Lambda Expression and generic method
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You can't use a lambda expression for a functional interface, if the method in the functional interface has type parameters. See section §15.27.3 in JLS8:
A lambda expression is compatible [..] with a target type T if T is a functional interface type (§9.8) and the expression is c...
View a file in a different Git branch without changing branches
...nswers to some related questions:
How to retrieve a single file from specific revision in Git?
How to get just one file from another branch
UPDATE 2015-01-19:
Nowadays you can use relative paths with git show a1b35:./file.txt.
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Add column to SQL Server
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If you post code, XML or data samples, please highlight those lines in the text editor and click on the "code samples" button ( { } ) on the editor toolbar to nicely format and syntax highlight it!
– ma...
C++ template constructor
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There is no way to explicitly specify the template arguments when calling a constructor template, so they have to be deduced through argument deduction. This is because if you say:
Foo<int> f = Foo<int>();
The <int> is the template argum...