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What can I use instead of the arrow operator, `->`?
...e pointer is pointing to for us.
Similarly, we can use -> to access or set a member of a class:
myClass* ptr = &myClassMember;
ptr->myClassVar = 2;
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Generating random numbers in Objective-C
...m() function. It uses a superior algorithm to rand. You don't even need to set a seed.
#include <stdlib.h>
// ...
// ...
int r = arc4random_uniform(74);
The arc4random man page:
NAME
arc4random, arc4random_stir, arc4random_addrandom -- arc4 random number generator
LIBRARY
Stand...
Vim: Move cursor to its last position
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Limiting the number of records from mysqldump?
... Additionally, you can use: mysqldump --opt --where="1 limit 1000000 offset 1000000" --no-create-info database to get the second page of 1 million records. Make sure to use the --no-create-info flag on pages other than the first to only dump the data and leave off the create table stuff.
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git returns http error 407 from proxy after CONNECT
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git config --global http.sslVerify false
(I confirm it's necessary : if set to true getting "SSL certificate problem: unable to get local issuer certificate" error)
in my case, no need of defining all_proxy variable
and finally
git clone https://github.com/someUser/someRepo.git
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Autocompletion in Vim
... For CSS support, add the dash for built in autocomplete by adding 'set iskeyword+=-' to your .vimrc
– mahalie
Jan 17 '12 at 20:54
3
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Can't escape the backslash with regex?
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Is there a library function for Root mean square error (RMSE) in python?
I know I could implement a root mean squared error function like this:
12 Answers
12
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Smallest data URI image possible for a transparent image
I'm using a transparent 1x1 image with a background image, to be able to use sprites and still provide alternative text for some icons.
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Write to UTF-8 file in Python
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I use the file *nix command to convert a unknown charset file in a utf-8 file
# -*- encoding: utf-8 -*-
# converting a unknown formatting file in utf-8
import codecs
import commands
file_location = "jumper.sub"
file_encoding = commands.getoutput('file -b --mime-encoding %s'...