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In Visual Studio C++, what are the memory allocation representations?
...p://en.wikipedia.org/wiki/Magic_number_(programming)
* 0xABABABAB : Used by Microsoft's HeapAlloc() to mark "no man's land" guard bytes after allocated heap memory
* 0xABADCAFE : A startup to this value to initialize all free memory to catch errant pointers
* 0xBAADF00D : Used by Microsoft's Local...
What is a plain English explanation of “Big O” notation?
...(2n) becomes insignificant (accounting for 0.0002% of the total operations by that stage).
One can notice that we've assumed the worst case scenario here. While multiplying 6 digit numbers, if one of them has 4 digits and the other one has 6 digits, then we only have 24 multiplications. Still, we ca...
What techniques can be used to speed up C++ compilation times?
...standard headers don't have a respective declarations header.
Prefer pass-by-reference to pass-by-value in function signatures. This will eliminate the need to #include the respective type definitions in the header file and you will only need to forward-declare the type. Of course, prefer const ref...
Spring Data JPA - “No Property Found for Type” Exception
...c interface IFooDAO extends JpaRepository< Foo, Long >{
Foo findByOldPropName( final String name );
}
The error indicated that it could no longer find "OldPropName" and threw the exception.
To quote the article on DZone:
When Spring Data creates a new Repository implementation, it a...
git:// protocol blocked by company, how can I get around that?
...ersistent change so you don't have to remember to issue commands suggested by other posts for every git repo.
The below solution also just works for submodules which might also be using the git: protocol.
Since the git message doesn't really point immediately to the firewall blocking port 9418, le...
brew update: The following untracked working tree files would be overwritten by merge:
...po, you have to update or reset brew to the master branch version. brew [by default] is located in the /usr/local folder, so you
Go to that folder [first command] which also should update permissions (if not see below)
Fetch the origin [second command] which means to update your LOCAL version ...
Why are functions in Ocaml/F# not recursive by default?
...s it that functions in F# and Ocaml (and possibly other languages) are not by default recursive?
6 Answers
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PHP Sort Array By SubArray Value
...
Use usort.
function cmp_by_optionNumber($a, $b) {
return $a["optionNumber"] - $b["optionNumber"];
}
...
usort($array, "cmp_by_optionNumber");
In PHP ≥5.3, you should use an anonymous function instead:
usort($array, function ($a, $b) {
...
How to permanently set $PATH on Linux/Unix? [closed]
...like /usr/local/something/bin to PATH variable or defining JAVA_HOME. Used by PAM and SystemD.
/etc/environment.d/*.conf List of unique assignments, allows references. Perfect for adding system-wide directories like /usr/local/something/bin to PATH variable or defining JAVA_HOME. The configuration ...
Can I query MongoDB ObjectId by date?
... I am using nodejs with mongodbnative. Fixed the "not defined error" by including var ObjectId = require('mongodb').ObjectID;
– peter
Mar 18 '13 at 6:35
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