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Intercept page exit event
When editing a page within my system, a user might decide to navigate to another website and in doing so could lose all the edits they have not saved.
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Why does Internet Explorer not send HTTP post body on Ajax call after failure?
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There does not seem to be a clear answer to this question, so I will provide my empirical data as a substitute and provide some ways to work around it. Maybe some MS insider will one day shed some light on this...
If HTTP Keep-Alive is disabled on the server, this issue go...
What's the difference between findAndModify and update in MongoDB?
I'm a little bit confused by the findAndModify method in MongoDB. What's the advantage of it over the update method? For me, it seems that it just returns the item first and then updates it. But why do I need to return the item first? I read the MongoDB: the definitive guide and it says that i...
Argparse: Way to include default values in '--help'?
Suppose I have the following argparse snippet:
3 Answers
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HTML5shiv vs Dean Edwards IE7-js vs Modernizr - which to choose?
I'm looking to build my first HTML5 site and have been looking at working with IE.
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Using {} in a case statement. Why?
What is the point with using { and } in a case statement? Normally, no matter how many lines are there in a case statement, all of the lines are executed. Is this just a rule regarding older/newer compilers or there is something behind that?
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Regular expression matching a multiline block of text
I'm having a bit of trouble getting a Python regex to work when matching against text that spans multiple lines. The example text is ('\n' is a newline)
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Better way of getting time in milliseconds in javascript?
Is there an alternative in JavaScript of getting time in milliseconds using the date object, or at least a way to reuse that object, without having to instantiate a new object every time I need to get this value? I am asking this because I am trying to make a simple game engine in JavaScript, and wh...
Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
...t allow all of these combinations of operators to work the same way.
The fundamental reason why all of these work is that a function (like foo) is implicitly convertible to a pointer to the function. This is why void (*p1_foo)() = foo; works: foo is implicitly converted into a pointer to itself a...
Heroku “psql: FATAL: remaining connection slots are reserved for non-replication superuser connectio
I'm developing an app on Heroku with a Postgresql backend. Periodically, I get this error message when trying to access the database, both from the CLI and from loading a page on the server:
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