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How to call a parent class function from derived class function?
...disambiguate it by adding the base class's name followed by two colons base_class::foo(...). You should note that unlike Java and C#, C++ does not have a keyword for "the base class" (super or base) since C++ supports multiple inheritance which may lead to ambiguity.
class left {
public:
void f...
JavaScript object: access variable property by name as string [duplicate]
...racket notation.
If you NEED a function for it, here it is:
function read_prop(obj, prop) {
return obj[prop];
}
To answer some of the comments below that aren't directly related to the original question, nested objects can be referenced through multiple brackets. If you have a nested objec...
How do I count the number of occurrences of a char in a String?
...n Android, where there is no StringUtils class
– Jose_GD
Nov 6 '12 at 13:12
43
...
Alphabet range in Python
...
>>> import string
>>> string.ascii_lowercase
'abcdefghijklmnopqrstuvwxyz'
If you really need a list:
>>> list(string.ascii_lowercase)
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w...
Activate a virtualenv via fabric as deploy user
...bric 1.0 you can make use of prefix() and your own context managers.
from __future__ import with_statement
from fabric.api import *
from contextlib import contextmanager as _contextmanager
env.hosts = ['servername']
env.user = 'deploy'
env.keyfile = ['$HOME/.ssh/deploy_rsa']
env.directory = '/path...
Why does Ruby 1.9.2 remove “.” from LOAD_PATH, and what's the alternative?
...s to Ruby 1.9.2 no longer make the current directory . part of your LOAD_PATH . I have a non-trivial number of Rakefiles that assume that . is part of the LOAD_PATH , so this broke them (they reported "no such file to load" for all require statements that based off the project path). Was there...
how to bypass Access-Control-Allow-Origin?
...case anyone out there actually needs to bypass this they can use PHP's file_get_contents($remote_url);. There are obviously many ways to do this but this is how I did it.
– Shawn Whinnery
Mar 5 '14 at 23:39
...
Linux command to print directory structure in the form of a tree
... /proc
|-- fd
| `-- 3 -> /proc/15589/fd
|-- fdinfo
|-- net
| |-- dev_snmp6
| |-- netfilter
| |-- rpc
| | |-- auth.rpcsec.context
| | |-- auth.rpcsec.init
| | |-- auth.unix.gid
| | |-- auth.unix.ip
| | |-- nfs4.idtoname
| | |-- nfs4.nametoid
| | |-- nfsd.export
...
How to check if NSString begins with a certain character
...
Another approach to do it..
May it help someone...
if ([[temp substringToIndex:4] isEqualToString:@"http"]) {
//starts with http
}
share
|
...
What is the difference between Θ(n) and O(n)?
...
one is Big "O"
one is Big Theta
http://en.wikipedia.org/wiki/Big_O_notation
Big O means your algorithm will execute in no more steps than in given expression(n^2)
Big Omega means your algorithm will execute in no fewer steps than in the given expression(n^2)
When both condition are tru...