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Haskell, Lisp, and verbosity [closed]
...ads, arrows, etc.), but it might require more thinking (but only the first time, and it's fun and you'll be a better programmer for it), and
the static system is sufficiently general that it never gets in your way, and somewhat surprisingly it actually "aids in achieving agility" (as you said) becau...
Python append() vs. + operator on lists, why do these give different results?
...ts stored in them is constrained. The type is specified at object creation time by using a type code, which is a single character.
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When & why to use delegates? [duplicate]
...od that matches this signature, to the delegate and it will be called each time my delegate is called".
Typical use is of course events. All the OnEventX delegate to the methods the user defines.
Delegates are useful to offer to the user of your objects some ability to customize their behavior.
Mo...
JSON serialization of Google App Engine models
...ents) to a nested dictionary that can be passed to simplejson:
import datetime
import time
SIMPLE_TYPES = (int, long, float, bool, dict, basestring, list)
def to_dict(model):
output = {}
for key, prop in model.properties().iteritems():
value = getattr(model, key)
if valu...
Parse rfc3339 date strings in Python? [duplicate]
...
You can use dateutil.parser.parse to parse strings into datetime objects.
dateutil.parser.parse will attempt to guess the format of your string, if you know the exact format in advance then you can use datetime.strptime which you supply a format string to (see Brent Washburne's answe...
What is a word boundary in regex?
...inning of words and at the end of words. I got it its meaning well at that time. It's now exactly word(\w)-boundary.
My view is merely to immensely understanding-oriented. Logic behind of it should be examined from another answers.
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Is there a query language for JSON?
...to support JSON queries (similar to JSONiq). Of course, it could take some time since XQuery 3.0 is not officially released yet.
– Julien Ribon
Dec 14 '12 at 10:14
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JavaScript for…in vs for
...valuate the length of the array before the for, not evaluate a.length each time in the loop.
– UpTheCreek
Mar 22 '12 at 13:46
9
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When to use ' (or quote) in Lisp?
...n 7)
(plot-free 14)
(plot-allocation 19)
But What About list?
Well, sometimes you do want to evaluate the arguments. Say you have a nifty function manipulating a number and a string and returning a list of the resulting ... things. Let's make a false start:
(defun mess-with (number string)
'...
open read and close a file in 1 line of code
...nt GC, where you have no guarantee that anything is GC'd at any particular time. Even the CPython documentation says you shouldn't rely on GC for cleanup like this. The latter part of the answer should be bold.
– user395760
Nov 4 '11 at 15:51
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