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Is there a way to iterate over a dictionary?
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Yes, NSDictionary supports fast enumeration. With Objective-C 2.0, you can do this:
// To print out all key-value pairs in the NSDictionary myDict
for(id key in myDict)
NSLog(@"key=%@ value=%@", key, [myDict objectForKey:key]);
The alternate method (which you have to use if you're ...
How to upper case every first letter of word in a string? [duplicate]
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answered Jul 19 '09 at 13:11
akarnokdakarnokd
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Return two and more values from a method
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160
def sumdiff(x, y)
return x+y, x-y
end
#=> nil
sumdiff(3, 4)
#=> [7, -1]
a = sumdiff(3,...
difference between #if defined(WIN32) and #ifdef(WIN32)
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answered Nov 11 '09 at 10:11
user44556user44556
4,38344 gold badges2525 silver badges2727 bronze badges
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postgresql - sql - count of `true` values
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10 Answers
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Can I call memcpy() and memmove() with “number of bytes” set to zero?
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edited Sep 22 '12 at 10:42
answered Sep 20 '10 at 13:32
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Postgresql query between date ranges
...example:
SELECT
user_id
FROM
user_logs
WHERE
login_date >= '2014-02-01'
AND login_date < '2014-03-01'
In this case you still need to calculate the start date of the month you need, but that should be straight forward in any number of ways.
The end date is also simplified; just...
RegEx: Smallest possible match or nongreedy match
... without matching unless absolutely necessary, use something like (?:blah){0,1}?. For a repeating match (either using {n,} or {n,m} syntax) append a question mark to try to match as few as possible (e.g. {3,}? or {5,7}?).
The documentation on regular expression quantifiers may also be helpful.
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What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?
On the NerdDinner example of Professional ASP.NET MVC 1.0 there's a method to create a new dinner as copied bellow (page 89 of the free NerdDinner version).
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Are loops really faster in reverse?
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907
It's not that i-- is faster than i++. Actually, they're both equally fast.
What takes time in ...