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Convert NSNumber to int in Objective-C
I use [NSNumber numberWithInt:42] or @(42) to convert an int to NSNumber before adding it to an NSDictionary:
5 Answers...
Show SOME invisible/whitespace characters in Eclipse
A long while back I transitioned to doing all my web application development in Eclipse from BBEdit. But I miss one little feature from BBEdit. I used to be able to show invisible characters like tabs but not show other invisibles like spaces. I know that I can bulk turn all of these on in Eclipse, ...
Django removing object from ManyToMany relationship
How would I delete an object from a Many-to-Many relationship without removing the actual object?
3 Answers
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Python set to list
How can I convert a set to a list in Python? Using
7 Answers
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How to check if an array field contains a unique value or another array in MongoDB?
I am using mongodb now.
2 Answers
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Difference between Ctrl+Shift+F and Ctrl+I in Eclipse
I have been used Ctrl + Shift + F to correct indentation but I heard there is another shortcut to do that: Ctrl + I
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Calculate text width with JavaScript
I'd like to use JavaScript to calculate the width of a string. Is this possible without having to use a monospace typeface?
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ipython: print complete history (not just current session)
in ipython , I can use %hist or %history to print recent history, but this only prints history from current session.
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How to ignore xargs commands if stdin input is empty?
...un-if-empty option:
--no-run-if-empty
-r If the standard input does not contain any nonblanks, do not run the command. Normally, the command is run once even if there is no input. This option is a GNU extension.
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Why does Java's hashCode() in String use 31 as a multiplier?
Per the Java documentation, the hash code for a String object is computed as:
13 Answers
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