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Tools for analyzing performance of a Haskell program
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how to find out why this solution is so slow. Are there any commands that tell me where most of the computation-time is spend so I know which part of my haskell-program is slow?
Precisely! GHC provides many excellent tools, including:
runtime statistics
time profiling
heap profiling
t...
pull out p-values and r-squared from a linear regression
...ance of the coefficient of the single explanatory variable being non-zero) and R-squared value from a simple linear regression model? For example...
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Detach many subdirectories into a new, separate Git repository
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Instead of having to deal with a subshell and using ext glob (as kynan suggested), try this much simpler approach:
git filter-branch --index-filter 'git rm --cached -qr --ignore-unmatch -- . && git reset -q $GIT_COMMIT -- apps/AAA libs/XXX' --prune-empty -- ...
Unable to add window — token android.os.BinderProxy is not valid; is your activity running?
...Facebook API, I follow this example: https://github.com/facebook/facebook-android-sdk/tree/master/examples/simple
11 Ans...
What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 an
...at you'll use
a syscall with more than six
arguments.
For an example and a little more reading, refer to http://www.int80h.org/bsdasm/#alternate-calling-convention. Another example of a Hello World for i386 Linux using int 0x80: Hello, world in assembly language with Linux system calls?
Ther...
How to permanently add a private key with ssh-add on Ubuntu? [closed]
...ate one. It does not need root rights, so simply:
nano ~/.ssh/config
...and enter the lines above as per your requirements.
For this to work the file needs to have chmod 600. You can use the command chmod 600 ~/.ssh/config.
If you want all users on the computer to use the key put these lines in...
How can I get query string values in JavaScript?
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Update: Sep-2018
You can use URLSearchParams which is simple and has decent (but not complete) browser support.
const urlParams = new URLSearchParams(window.location.search);
const myParam = urlParams.get('myParam');
PS
Unfortunately URLSearchParams don't properly parse query strings ...
Convert a Git folder to a submodule retrospectively?
Quite often it is the case that you're writing a project of some kind, and after a while it becomes clear that some component of the project is actually useful as a standalone component (a library, perhaps). If you've had that idea from early on, then there's a fair chance that most of that code is ...
iPhone OS: How do I create an NSDate for a specific date?
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@Chuck's answer is correct, and lead me to the following code. Thought I'd share:
NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setDay:10];
[comps setMonth:10];
[comps setYear:2010];
NSDate *date = [[NSCalendar currentCalendar] date...
open() in Python does not create a file if it doesn't exist
... open a file as read/write if it exists, or if it does not, then create it and open it as read/write? From what I read, file = open('myfile.dat', 'rw') should do this, right?
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