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Checking if all elements in a list are unique
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An early-exit solution could be
def unique_values(g):
s = set()
for x in g:
if x in s: return False
s.add(x)
return True
however for small cases or if early-exiting is not the common case then I would expect len(x) != len(set(x)) being t...
How to check if mod_rewrite is enabled in php?
I was wondering if it is possible to check if mod_rewrite is enabled on Apache AND IIS in PHP .
15 Answers
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Postgres could not connect to server
... This worked for me, after erasing I had to start postgres. # pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start
– Ricardo Castañeda
Mar 26 '15 at 19:46
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Exact difference between CharSequence and String in java [duplicate]
...tring()
)
I must confess I'm a bit surprised that my compiler javac 1.6.0_33 compiles the + obj using StringBuilder.append(Object) instead of StringBuilder.append(CharSequence). The former probably involves a call to the toString() method of the object, whereas the latter should be possible in a m...
What are the most-used vim commands/keypresses?
...dows
^Wn new window
^Wj down to next window; ^Wk up to previous window
^W_ maximise current window; ^W= make all windows equal size
^W+ increase window size; ^W- decrease window size
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gd ...
Change URL and redirect using jQuery
...’s comment is correct: stackoverflow.com/a/10016109/96656#comment18225061_10016109
– Mathias Bynens
May 23 '13 at 13:06
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How do you clear a stringstream variable?
... this better than clearing the stringstream?
– Robur_131
May 25 at 10:06
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Explicitly set Id with Doctrine when using “AUTO” strategy
...adata->setIdGeneratorType(\Doctrine\ORM\Mapping\ClassMetadata::GENERATOR_TYPE_NONE);
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Pointers vs. values in parameters and return values
... of how the type is used"
Reference : https://golang.org/doc/faq#methods_on_values_or_pointers
Edit : Another important thing is to know the actual "type" that you are sending to function. The type can either be a 'value type' or 'reference type'.
Even as slices and maps acts as references, ...
Uses of Action delegate in C# [closed]
... the computer science behind it read this: http://en.wikipedia.org/wiki/Map_(higher-order_function).
Now if you are using C# 3 you can slick this up a bit with a lambda expression like so:
using System;
using System.Collections.Generic;
class Program
{
static void Main()
{
List<...