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Python function global variables?
...hem, is the following a valid way to go about using them? (I am trying to call the global copy of a variable created in a separate function.)
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What is getattr() exactly and how do I use it?
... understand about getattr() is that getattr(li, "pop") is the same as calling li.pop .
14 Answers
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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
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You usually get this error if your tables use the InnoDB engine. In that case you would have to drop the foreign key, and then do the alter table and drop the column.
But the tricky part is that you can't drop the foreign key using...
Finding Variable Type in JavaScript
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Use typeof:
> typeof "foo"
"string"
> typeof true
"boolean"
> typeof 42
"number"
So you can do:
if(typeof bar === 'number') {
//whatever
}
Be careful though if you define these primitives with their object wrappers (which you should ...
Spring Test & Security: How to mock authentication?
...e properly secured. Just in case someone changes things around and accidentally removes security settings.
7 Answers
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Best way to parse command-line parameters? [closed]
What's the best way to parse command-line parameters in Scala?
I personally prefer something lightweight that does not require external jar.
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How to execute a raw update sql with dynamic binding in rails
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It doesn't look like the Rails API exposes methods to do this generically. You could try accessing the underlying connection and using it's methods, e.g. for MySQL:
st = ActiveRecord::Base.connection.raw_connection.prepare("update table set f1=? where f2=? and f3=?")
st.execute(f1, f2, f3)
st...
How to refer environment variable in POM.xml?
I am using maven as build tool. I have set an environment variable called env . How can I get access to this environment variable's value in the pom.xml file?
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How do I expand a tuple into variadic template function's arguments?
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Here's my code if anyone is interested
Basically at compile time the compiler will recursively unroll all arguments in various inclusive function calls <N> -> calls <N-1> -> calls ... -> calls <0> which is the last one and the compiler will o...
How to profile a bash shell script slow startup?
...t to go to the file command.txt leaving stdout and stdout to be output normally (or be redirected separately).
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