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In C++, if throw is an expression, what is its type?
...ote that throw-expression are assignment-expression. So they are a syntax error as an argument to most operators. Obviously, you can hide them in parenthesis, but if they aren't ignored (first argument of builtin operator , for instance), it is a type error.
– AProgrammer
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How can I get the current language in Django?
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– Ignas Butėnas
Aug 9 '16 at 14:05
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How to check if mysql database exists
...E = 'DBName'
If you just need to know if a db exists so you won't get an error when you try to create it, simply use (From here):
CREATE DATABASE IF NOT EXISTS DBName;
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可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术
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Best Practice for Exception Handling in a Windows Forms Application?
... as simple as wrapping Main() in a try/catch, failing fast with a graceful error message to the user. This is the "last resort" exception handler.
Preemptive checks are always correct if feasible, but not always perfect. For example, between the code where you check for a file's existence and the n...
Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?
...llowing is how eof can be used (and even, be more reliable than fail() for error checking):
while( !(in>>std::ws).eof() ) {
int data;
in >> data;
if ( in.fail() ) /* handle with break or throw */;
// now use data
}
(Thanks Tony D for the suggestion to highlight the ...
AngularJS ng-style with a conditional expression
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Syntax Error: Token '%3A' is%20an%20unexpected%20token at column 9 of the expression [ng-style%3A%...
– Bernardo Dal Corno
Sep 3 '18 at 2:11
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SQLAlchemy: print the actual query
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answered May 23 '14 at 18:05
zzzeekzzzeek
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No Persistence provider for EntityManager named
...emoved it once I solved the problem, just to make sure). I was getting the error finally because persistence.xml was not in the src/META-INF folder, even though it had been in a folder in the Eclipse source path for the project. I'm thinking somewhere it's hard-wired to be on src/*
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Tainted canvases may not be exported
... file or url to get a cross domain issue. Then why it is resulting in this error?
– Sajith
Feb 25 '15 at 5:19
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