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Convert NSNumber to int in Objective-C
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193
Have a look at the documentation. Use the intValue method:
NSNumber *number = [dict objectForKe...
Getting number of days in a month
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302
You want DateTime.DaysInMonth:
int days = DateTime.DaysInMonth(year, month);
Obviously it v...
What's the difference between `1L` and `1`?
I often seen the symbol 1L (or 2L , 3L , etc) appear in R code. Whats the difference between 1L and 1 ? 1==1L evaluates to TRUE . Why is 1L used in R code?
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JavaScript regex multiline flag doesn't work
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613
You are looking for the /.../s modifier, also known as the dotall modifier. It forces the dot . ...
Breakpoints are crossed out, how can I make them valid?
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answered Nov 3 '11 at 8:51
Michael BorgwardtMichael Borgwardt
320k7373 gold badges453453 silver badges688688 bronze badges
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Can jQuery get all CSS styles associated with an element?
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342
A couple years late, but here is a solution that retrieves both inline styling and external st...
How to run cron job every 2 hours
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398
Just do:
0 */2 * * * /home/username/test.sh
The 0 at the beginning means to run at the 0t...
How do I get SUM function in MySQL to return '0' if no values are found?
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307
Use COALESCE to avoid that outcome.
SELECT COALESCE(SUM(column),0)
FROM table
WHERE ...
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Get pandas.read_csv to read empty values as empty string instead of nan
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3 Answers
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How is Generic Covariance & Contra-variance Implemented in C# 4.0?
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3
So, does it mean that if the class is declared as "List<out T>" then it should NOT have a member function like "void Add(T obj)"? The ...