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Learn C first before learning Objective-C [closed]
...but it does have some prerequisites ("You should already know at least one scripting or programming language, including functions, variables and loops. You'll also need to type commands into the Mac OS X Terminal.").
(Just for the record and for context: I learned both at the same time back in 1991...
Configuring Git over SSH to login once
... .agent > /dev/null
}
The .agent file is created automatically by the script; it contains the environment variables definitions and exports. The above tries to source the .agent file, and then tries to ps(1) the agent. If it doesn't work it starts an agent and creates a new agent file. You can ...
Adding git branch on the Bash command prompt
...
git 1.9.3 or later: use __git_ps1
Git provides a shell script called git-prompt.sh, which includes a function __git_ps1 that
prints text to add to bash PS1 prompt (includes branch name)
Its most basic usage is:
$ __git_ps1
(master)
It also takes an optional format string...
How do I copy an entire directory of files into an existing directory using Python?
...standard shutil.copytree seems arbitrary and annoying. Workaround:
import os, shutil
def copytree(src, dst, symlinks=False, ignore=None):
for item in os.listdir(src):
s = os.path.join(src, item)
d = os.path.join(dst, item)
if os.path.isdir(s):
shutil.copytree...
How to get the parent dir location
...can only go as far as the root package, however. If this is a problem, use os.path.abspath: dirname(dirname(abspath(file))).
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Implement touch using Python?
...han the other solutions. (The with keyword is new in Python 2.5.)
import os
def touch(fname, times=None):
with open(fname, 'a'):
os.utime(fname, times)
Roughly equivalent to this.
import os
def touch(fname, times=None):
fhandle = open(fname, 'a')
try:
os.utime(fname,...
Why doesn't os.path.join() work in this case?
...ath" and everything before them is discarded.
Quoting the Python docs for os.path.join:
If a component is an absolute path, all previous components are thrown away and joining continues from the absolute path component.
Note on Windows, the behaviour in relation to drive letters, which seems ...
How to create a jQuery function (a new jQuery method or plugin)?
...
From the Docs:
(function( $ ){
$.fn.myfunction = function() {
alert('hello world');
return this;
};
})( jQuery );
Then you do
$('#my_div').myfunction();
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How to find out what group a given user has?
...
Below is the script which is integrated into ansible and generating dashboard in CSV format.
sh collection.sh
#!/bin/bash
HOSTNAME=`hostname -s`
for i in `cat /etc/passwd| grep -vE "nologin|shutd|hal|sync|root|false"|awk -F':' '{print...
What does the function then() mean in JavaScript?
... .then(function(battery) {
var charging = battery.charging;
alert(charging);
})
.then(function(){alert("YeoMan : SINGH is King !!");});
Another es6 Example
function fetchAsync (url, timeout, onData, onError) {
…
}
let fetchPromised = (url, timeout) => {
return ...