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Getting started with F# [closed]
...browser (Silverlight). (contains interactive tutorial walkthroughs)
Start by watching videos and presentations (BTW, An Introduction to Microsoft F# by Luca Bolognese is still one of the best presentations on the subject). Then read the following two must-read books:
Programming F#: A comprehensi...
Understanding reference counting with Cocoa and Objective-C
...being referenced (specifically, the NSObject base class implements this). By calling retain on an object, you are telling it that you want to up its reference count by one. By calling release, you tell the object you are letting go of it, and its reference count is decremented. If, after calling ...
How do I use itertools.groupby()?
...understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this:
...
Append an object to a list in R in amortized constant time, O(1)?
...h birthday. Some kind readers keep repeating any shortcomings with it, so by all means also see some of the comments below. One suggestion for list types:
newlist <- list(oldlist, list(someobj))
In general, R types can make it hard to have one and just one idiom for all types and uses.
...
C# Linq Group By on multiple columns [duplicate]
...es above, I would like to use LINQ to create a List from the List, grouped by the School, Friend and FavoriteColor properties. Is this possible with LINQ?
...
Best practice for instantiating a new Android Fragment
... to your Fragment so that they are available after a Fragment is recreated by Android is to pass a bundle to the setArguments method.
So, for example, if we wanted to pass an integer to the fragment we would use something like:
public static MyFragment newInstance(int someInt) {
MyFragment myF...
@property retain, assign, copy, nonatomic in Objective-C
...
The article linked to by MrMage is no longer working. So, here is what I've learned in my (very) short time coding in Objective-C:
nonatomic vs. atomic
- "atomic" is the default. Always use "nonatomic". I don't know why, but the book I read said ...
What does it mean to start a PHP function with an ampersand?
... will return a reference to a variable instead of the value.
Returning by reference is useful when
you want to use a function to find to
which variable a reference should be
bound. Do not use return-by-reference
to increase performance. The engine
will automatically optimize this on
...
Are single quotes allowed in HTML?
...Single quotes around attributes in HTML are and always have been permitted by the specification. I don't think any browsers wouldn't understand them.
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Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V
This is an interview question from google. I am not able to solve it by myself. Can somebody shed some light?
14 Answers
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