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How to undo 'git reset'?
...The second line says that HEAD 1 position ago (in other words, the state before the reset) is d27924e. It was obtained by checking out a particular commit (though that's not important right now). So, to undo the reset, run git reset HEAD@{1} (or git reset d27924e).
If, on the other hand, you've run...
How does the MapReduce sort algorithm work?
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Here are some details on Hadoop's implementation for Terasort:
TeraSort is a standard map/reduce sort, except for a custom partitioner that uses a sorted list of N − 1 sampled keys that define the key range for each reduce. In particular, all keys such that sample[i ...
How to list files in a directory in a C program?
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An example, available for POSIX compliant systems :
/*
* This program displays the names of all files in the current directory.
*/
#include <dirent.h>
#include <stdio.h>
int main(void) {
DIR *d;
struct dirent *dir;
d = ope...
Can I change the root EBS device of my amazon EC2 instance?
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Neither /dev/sda nor /dev/sda1 worked for me, but /dev/xvda did.
– bhspencer
Feb 5 '15 at 14:37
10
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What should I do if the current ASP.NET session is null?
...essionState http module, disabling sessions altogether
If your code runs before the HttpApplication.AcquireRequestState event.
Your code runs in an IHttpHandler, that does not specify either the IRequiresSessionState or IReadOnlySessionState interface.
If you only have code in pages, you won't run ...
urllib2.HTTPError: HTTP Error 403: Forbidden
...Mee did you take a look at the answer below? it was addressed specifically for python 3, check if it works for you...
– andrean
Jan 19 '15 at 21:07
1
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Why does git revert complain about a missing -m option?
So I'm working on a project with other people, and there's multiple github forks being worked on. Someone just made a fix for a problem and I merged with his fork, but then I realized that I could find a better solution. I want to revert the commit I just made. I tried doing this with git revert HE...
How to handle multiple cookies with the same name?
Say for example I had an application sending the following HTTP headers to set to cookie named "a":
6 Answers
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iOS difference between isKindOfClass and isMemberOfClass
... not expect. In many cases your best choice is more likely to be -(BOOL)conformsToProtocol:(SEL)aSelector or - (BOOL)conformsToProtocol:(Protocol*)aProtocol. I.e, it's better to test these if they can answer your need rather than testing class/subclass.
See apple doc for NSObject class and protocol...
How do you redirect to a page using the POST verb?
... header tells the browser where to go, and the browser makes a GET request for that page. You'll probably have to just write the code for your page to accept GET requests as well as POST requests.
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