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Why are #ifndef and #define used in C++ header files?
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Those are called #include guards.
Once the header is included, it checks if a unique value (in this case HEADERFILE_H) is defined. Then if it's not defined, it defines it and continues to the rest of the page.
When the code is included again...
“Keep Me Logged In” - the best approach
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Why include the IP in the hash? Also, make sure to include timestamp information in the cookie and use this information to establish a maximum age for the cookie so that you are not creating an identity token that is good for ete...
Is Ruby pass by reference or by value?
...larification, because it is important for future readers and I should have included it. (I'm always torn between including more info and not confusing people.)
– Chuck
Apr 26 '12 at 14:53
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How can I prevent SQL injection in PHP?
...tement, not an SQL string. SQL injection works by tricking the script into including malicious strings when it creates SQL to send to the database. So by sending the actual SQL separately from the parameters, you limit the risk of ending up with something you didn't intend.
Any parameters you send ...
Can I have an onclick effect in CSS?
...eractivity is beyond the scope of CSS' purpose), I'll update the answer to include it. As it stands, the "2017 answer" headline is to let people know that this answer is the most up-to-date one, so at a glance they won't look at the fact the answer was posted in 2015 and go "oh, I wonder if a new fe...
How can I include a YAML file inside another?
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No, YAML does not include any kind of "import" or "include" statement.
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How to properly add include directories with CMake
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Two things must be done.
First add the directory to be included:
target_include_directories(test PRIVATE ${YOUR_DIRECTORY})
In case you are stuck with a very old CMake version (2.8.10 or older) without support for target_include_directories, you can also use the legacy include...
node.js require all files in a folder?
...ptions, especially for recursive-child folders that have files you need to include.
– ngDeveloper
Jul 8 '15 at 18:36
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How do I animate constraint changes?
...e constraints attached to it. Doing so will update all constrained views, including animating other views that might be constrained to the view that you changed the constraint of (e.g. View B is attached to the bottom of View A and you just changed View A's top offset and you want View B to animate...
Unix command to prepend text to a file
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Yeah, an explanation would be great. Can the inFile include directories in it's path?
– zakdances
Oct 25 '13 at 3:00
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