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What's the difference between dynamic (C# 4) and var?
...ng are 100% identical:
var s = "abc";
Console.WriteLine(s.Length);
and
string s = "abc";
Console.WriteLine(s.Length);
All that happened was that the compiler figured out that s must be a string (from the initializer). In both cases, it knows (in the IL) that s.Length means the (instance) strin...
How do I read any request header in PHP
... of the header you need in UPPERCASE (and with '-' replaced by '_')
$headerStringValue = $_SERVER['HTTP_XXXXXX_XXXX'];
ELSE IF: you run PHP as an Apache module or, as of PHP 5.4, using FastCGI (simple method):
apache_request_headers()
<?php
$headers = apache_request_headers();
foreach ($hea...
How can I check if multiplying two numbers in Java will cause an overflow?
...If you're writing a large application, for example for a business, then an extra JAR on the classpath won't do any harm and Guava has lots of very useful code in it. It's much better to reuse their carefully tested code than to try to write your own version of the same (which I presume is what you r...
List columns with indexes in PostgreSQL
...ect
t.relname as table_name,
i.relname as index_name,
array_to_string(array_agg(a.attname), ', ') as column_names
from
pg_class t,
pg_class i,
pg_index ix,
pg_attribute a
where
t.oid = ix.indrelid
and i.oid = ix.indexrelid
and a.attrelid = t.oid
and a.attn...
How to get string objects instead of Unicode from JSON?
... )
def _byteify(data, ignore_dicts = False):
# if this is a unicode string, return its string representation
if isinstance(data, unicode):
return data.encode('utf-8')
# if this is a list of values, return list of byteified values
if isinstance(data, list):
return [...
Why doesn't JavaScript support multithreading?
...en more than one core), and the difficulties there are way larger than the extra possibilities.
For the future of JavaScript, check this out:
https://developer.mozilla.org/presentations/xtech2006/javascript/
share
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How to pass all arguments passed to my bash script to a function of mine? [duplicate]
...t want to do:
"$*" gives all of the arguments stuck together into a single string (separated by spaces, or whatever the first character of $IFS is). This looses the distinction between spaces within arguments and the spaces between arguments, so is generally a bad idea. Although it might be ok for p...
How to check if variable is string with python 2 and 3 compatibility
...: isinstance(x, str) in python-3.x but I need to check if something is a string in python-2.x as well. Will isinstance(x, str) work as expected in python-2.x? Or will I need to check the version and use isinstance(x, basestr) ?
...
Get URL query string parameters
What is the "less code needed" way to get parameters from a URL query string which is formatted like the following?
11 Answ...
Specifying a custom DateTime format when serializing with Json.Net
...y ARE correct, although they are not strictly necessary here. See Literal String Delimiters in the documentation for Custom Date and Time Format Strings. However, the format I quoted as the default format for the IsonDateTimeConverter was taken directly from the Json.Net source code; therefore I a...