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How do I expire a PHP session after 30 minutes?

...ms with filesystems where atime tracking is not available. So it additionally might occur that a session data file is deleted while the session itself is still considered as valid because the session data was not updated recently. And second: session.cookie_lifetime session.cookie_lifetime ...
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Is it possible to forward-declare a function in Python?

...rwards is impossible, what about defining it in some other module? Technically you still define it first, but it's clean. You could create a recursion like the following: def foo(): bar() def bar(): foo() Python's functions are anonymous just like values are anonymous, yet they can be ...
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SQLAlchemy: cascade delete

...use that is where you defined your relationship (it doesn't care that you called it "Child" of course). If you define the relationship on the Parent class instead, it will work: children = relationship("Child", cascade="all,delete", backref="parent") (note "Child" as a string: this is allowed wh...
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What does 'super' do in Python?

... What's the difference? SomeBaseClass.__init__(self) means to call SomeBaseClass's __init__. while super(Child, self).__init__() means to call a bound __init__ from the parent class that follows Child in the instance's Method Resolution Order (MRO). If the instance is a subclass of ...
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Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c

... implement a mechanism where, on first visit, Google Analytics is automatically disabled in the absence of an opt-in cookie (cookies that determine cookie preferences are explicitly allowed), and then, if an opt-in happens, re-runs Google Analytics. On subsequent pageviews, all would run smoothly. ...
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Regex to test if string begins with http:// or https://

...s." (Duplicate characters are ignored.) Try this: ^https?:// If you really want to use alternation, use this syntax instead: ^(http|https):// share | improve this answer | ...
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Calling Objective-C method from C++ member function?

I have a class ( EAGLView ) which calls a member function of a C++ class without problems. Now, the problem is that I need to call in that C++ class a objective-C function [context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)self.layer]; which I cannot do in C++ syntax...
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Best practices with STDIN in Ruby?

...ARGF is your friend when it comes to input; it is a virtual file that gets all input from named files or all from STDIN. ARGF.each_with_index do |line, idx| print ARGF.filename, ":", idx, ";", line end # print all the lines in every file passed via command line that contains login ARGF.each do...
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Command line for looking at specific port

...ic port from the Windows command line? I know I can use netstat to examine all ports but netstat is slow and looking at a specific port probably isn't. ...
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Create table using Javascript

I have a JavaScript function which creates a table with 3 rows 2 cells. 12 Answers 12 ...