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INSERT … ON DUPLICATE KEY (do nothing)
...).
If you don't care about errors (conversion errors, foreign key errors) and autoincrement field exhaustion (it's incremented even if the row is not inserted due to duplicate key), then use INSERT IGNORE.
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How do I select the parent form based on which submit button is clicked?
...one hidden variable that's different). A user will only fill in one form, and I'd like to validate/etc all the forms with only one JS script.
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Is there a command for formatting HTML in the Atom editor?
I would like to format my HTML with a command, as I do in Visual Studio, using Ctrl + K + D . Is this possible in Atom ? If not, are there other options?
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How to create a static library with g++?
Can someone please tell me how to create a static library from a .cpp and a .hpp file? Do I need to create the .o and the .a? I would also like to know how can I compile a static library in and use it in other .cpp code. I have header.cpp , header.hpp . I would like to create header.a . Test the...
Superiority of unnamed namespace over static?
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You're basically referring to the section §7.3.1.1/2 from the C++03 Standard,
The use of the static keyword is
deprecated when declaring objects in a
namespace scope; the
unnamed-namespace provides a superior
alternative.
Note that this paragraph was already removed in C++11. stat...
How can i get the session object if i have the entity-manager
...yManagerImpl) em.getDelegate()).getSession();
I agree, that's horrible, and the spec is to blame here (not clear enough).
JPA 2.0
With JPA 2.0, there is a new (and much better) EntityManager#unwrap(Class<T>) method that is to be preferred over EntityManager#getDelegate() for new applicati...
How can I make gdb save the command history?
How can I set up gdb so that it saves the command history? When starting a new gdb session I'd like to use the arrow up keys to access the commands of the previous sessions.
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Get underlying NSData from UIImage
... UIImageJPEGRepresentation or UIImagePNGRepresentation will alter the data and do a reconversion. Is there any way to really achieve what was asked for?
– Patrik
Mar 12 '13 at 18:19
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Code for decoding/encoding a modified base64 URL
I want to base64 encode data to put it in a URL and then decode it within my HttpHandler.
5 Answers
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Ruby: Merging variables in to a string
...implified the problem too much. The String will be pulled from a database, and the variable dependant a number of factors. Normally I would use a replace for 1 or two varibles, but this has the potential to be more. Any thoughts?
– FearMediocrity
Feb 16 '09 ...