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How to permanently export a variable in Linux?
...tantly in GUI based system's you have to exit the terminal or create a new one and in server logout the session and login to reflect these changes.
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What's the difference between a POST and a PUT HTTP REQUEST?
...that file or resource. If there is no file or resource there, PUT creates one. PUT is idempotent, but paradoxically PUT responses are not cacheable.
HTTP 1.1 RFC location for PUT
HTTP POST:
POST sends data to a specific URI and expects the resource at that URI to handle the request. The web se...
How can I check if a key exists in a dictionary? [duplicate]
...
As accepted answers go, this one is horrible. It in no way answers the question and is nothing more than a condescending link to the documentation. It is sad that Google ranks this so highly.
– cstrutton
Jul 12 '1...
Is calculating an MD5 hash less CPU intensive than SHA family functions?
...what less CPU-intensive. On my Intel x86 (Core2 Quad Q6600, 2.4 GHz, using one core), I get this in 32-bit mode:
MD5 411
SHA-1 218
SHA-256 118
SHA-512 46
and this in 64-bit mode:
MD5 407
SHA-1 312
SHA-256 148
SHA-512 189
Figures are in megabytes per second, for a "...
How can I switch my git repository to a particular commit
...he above commands create a new branch and with the latest commit being the one specified in the command, but just in case you want your current branch HEAD to move to the specified commit, below is the command:
git checkout <commit_hash>
It detaches and point the HEAD to specified commit a...
Byte order mark screws up file reading in Java
...icode
* BOMs.
*/
public static final class BOM
{
/**
* NONE.
*/
public static final BOM NONE = new BOM(new byte[]{},"NONE");
/**
* UTF-8 BOM (EF BB BF).
*/
public static final BOM UTF_8 = new BOM(new byte[]{(byte)0xEF,
...
How to make an OpenGL rendering context with transparent background?
...ring my research I found different ways to achieve what I was looking for. One of the most interesting ones is AeroGL, and it shows snippets of code using a technique that was not mentioned so far, which is rendering the graphics to a device-independent bitmap (DIB).
To close this thread permanentl...
Swift native base class or NSObject
...ency with native Cocoa, I think dynamic should be the default. (Unless someone can convince me otherwise, hence this question).
– Jasper Blues
Jun 9 '14 at 23:27
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Maximum number of records in a MySQL database table
...ake it a CHAR(100). You could also declare the primary key over more than one column.
There are other constraints on table size besides number of rows. For instance you could use an operating system that has a file size limitation. Or you could have a 300GB hard drive that can store only 300 mill...
git rebase fatal: Needed a single revision
...bug? git rev-parse origin works, as does git rebase origin in my git.git clone (in up-to-date, fast-forward, and true rebase case, including interactive).
– Cascabel
Jan 25 '11 at 21:37
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