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lenses, fclabels, data-accessor - which library for structure access and mutation is better
...s implementation you use.
Many of these libraries also provide a bunch of extra combinators on top, and usually some form of template haskell machinery to automatically generate lenses for the fields of simple record types.
With that in mind, we can turn to the different implementations:
Implemen...
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...
Matplotlib tight_layout() doesn't take into account figure suptitle
...=24)
# Instead, do a hack by annotating the first axes with the desired
# string and set the positioning to 'figure fraction'.
fig.get_axes()[0].annotate('Long Suptitle', (0.5, 0.95),
xycoords='figure fraction', ha='center',
fontsize=24
...
How do I get a Date without time in Java?
...is asking about how to get a Date object - that answer formats a date to a string, which isn't the same thing. Fundamentally, asking what date a Date is on is a meaningless question without more information: the time zone and the calendar system you're using.
– Jon Skeet
...
SQL Switch/Case in 'where' clause
... @selectedValue varchar (50)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
SELECT
drugstock_drugname.n_cur_bal,drugname.cdrugname,clinic.cclinicname
FROM drugstock_drugname
INNER JOIN drugname ON drugstock_drugname.dr...
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 do I change selected value of select2 dropdown with JqGrid?
...ng with select 2 boxes where both boxes are populated with Ajax and I used extra data properties for the first box to set the value of the second using this. Again thank you!!!!
– Sam
Oct 26 '16 at 11:06
...
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 [...
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) ?
...
How to parse a date? [duplicate]
...h a different format.
To parse your "Thu Jun 18 20:56:02 EDT 2009" date string you need a SimpleDateFormat like this (roughly):
SimpleDateFormat parser=new SimpleDateFormat("EEE MMM d HH:mm:ss zzz yyyy");
Use this to parse the string into a Date, and then your other SimpleDateFormat to turn th...