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join list of lists in python [duplicate]
...el
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a
b
c
From those links, apparently the most complete-fast-elegant-etc implementation is the following:
def flatten(l, ltypes=(list, tuple)):
ltype = type(l)
l = list(l)
i = 0
while i < len(l):
while isinstance(l[i], ltypes):
if not l[i]:
...
Check if a variable is a string in JavaScript
...[object ' + name + ']';
};
});
That will define isString, isNumber, etc.
In Node.js, this can be implemented as a module:
module.exports = [
'Arguments',
'Function',
'String',
'Number',
'Date',
'RegExp'
].reduce( (obj, name) => {
obj[ 'is' + name ] = x => toString....
How can I find where I will be redirected using cURL?
...
Oh, so you don't actually want to fetch the page? Just find out the location? In that case, I'd suggest the tactic used here: zzz.rezo.net/HowTo-Expand-Short-URLs.html -- basically just grab the header from the page that redirects, and grab the Location: heade...
How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
... RHEL/CentOS.
No need for priv, dorky binaries, hacky scripts, libpcap, etc. Win.
$ sar -n DEV 1 3
Linux 2.6.18-194.el5 (localhost.localdomain) 10/27/2010
02:40:56 PM IFACE rxpck/s txpck/s rxbyt/s txbyt/s rxcmp/s txcmp/s rxmcst/s
02:40:57 PM lo 0.00 0.00 ...
Map enum in JPA with fixed values?
... use a provider extension (with Hibernate UserType, EclipseLink Converter, etc). (the second solution). ~or~
You'll have to use the @PrePersist and @PostLoad trick (the first solution). ~or~
Annotate getter and setter taking and returning the int value ~or~
Use an integer attribute at the entity lev...
Create a .csv file with values from a Python list
...l fields, only fields with quotes and seperators, only non numeric fields, etc) and how to esacpe control charecters (double quotes, or escaped strings). If your values are simple, string.join will probably be OK but if you're having to manage lots of edge cases, use the module available.
...
Why return NotImplemented instead of raising NotImplementedError
... binary special methods (e.g. __eq__(),
__lt__(), __add__(), __rsub__(), etc.) to indicate that the operation is not implemented with respect to the other type
exception NotImplementedError
[...] In user defined base
classes, abstract methods should raise this exception when they
require...
Objective-C Static Class Level variables
I have a class Film, each of which stores a unique ID. In C#, Java etc I can define a static int currentID and each time i set the ID i can increase the currentID and the change occurs at the class level not object level. Can this be done in Objective-C? I've found it very hard to find an answer for...
Android emulator and virtualbox cannot run at same time
... the Virtualbox emulator and unload its driver (vboxdrv) by running 'sudo /etc/init.d/vboxdrv stop'. Google suggests this "solution" on its Android Emulator page in the section about Linux.
share
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Ideal Ruby project structure
...ew/clarification of the ideal project structure for a ruby (non-rails/merb/etc) project. I'm guessing it follows
4 Answers
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