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Reverse a string in Python
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How about:
>>> 'hello world'[::-1]
'dlrow olleh'
This is extended slice syntax. It works by doing [begin:end:step] - by leaving begin and end off and specifying a step of -1, it reverses a string.
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Comparing boxed Long values 127 and 128
...ng objects values using if conditions. When these values are less than 128 , the if condition works properly, but when they are greater than or equal to 128 , comparison fails.
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looping through an NSMutableDictionary
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211
A standard way would look like this
for(id key in myDict) {
id value = [myDict objectForKe...
How do I Moq a method that has an optional argument in its signature without explicitly specifying i
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edited Sep 11 '15 at 12:36
answered Oct 19 '12 at 16:41
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What is the documents directory (NSDocumentDirectory)?
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197
Your app only (on a non-jailbroken device) runs in a "sandboxed" environment. This means that ...
Using variables inside a bash heredoc
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edited Oct 19 '11 at 12:39
Joachim Sauer
266k5353 gold badges513513 silver badges578578 bronze badges
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How safe is it to store sessions with Redis?
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148
Redis is perfect for storing sessions. All operations are performed in memory, and so reads an...
How do I fix a merge conflict due to removal of a file in a branch?
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edited Mar 6 '14 at 20:23
answered Sep 4 '09 at 18:23
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mongoDB/mongoose: unique if not null
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173
As of MongoDB v1.8+ you can get the desired behavior of ensuring unique values but allowing mu...
How can I recover a lost commit in Git?
...n in that list and you can reset to it (for example:git reset --hard e870e41).
(If you didn't commit your changes... you might be in trouble - commit early, and commit often!)
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