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Scala how can I count the number of occurrences in a list
I want to implement it like this: list.count(2) (returns 3).
16 Answers
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Bash script to receive and repass quoted parameters
I'm trying to get quoted parameters of a bash script to safely be received by a nested script. Any ideas?
2 Answers
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Do I need to manually close an ifstream?
Do I need to manually call close() when I use a std::ifstream ?
5 Answers
5
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How to limit UITableView row reordering to a section
I was hitting my head over this one, and google was turning up nothing.
I eventually worked it out and thought I'd write it up here for the sake of the next person.
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Return 0 if field is null in MySQL
In MySQL, is there a way to set the "total" fields to zero if they are NULL?
5 Answers
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Proper usage of Java -D command-line parameters
When passing a -D parameter in Java, what is the proper way of writing the command-line and then accessing it from code?
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SQL query for finding records where count > 1
I have a table named PAYMENT . Within this table I have a user ID, an account number, a ZIP code and a date. I would like to find all records for all users that have more than one payment per day with the same account number.
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Difference between exit(0) and exit(1) in Python
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0 and 1 are the exit codes.
exit(0) means a clean exit without any errors / problems
exit(1) means there was some issue / error / problem and that is why the program is exiting.
This is not Python specific and is pretty common. A non-zero exit code is treated...
How does IPython's magic %paste work?
...dy indented Python code / whole functions and classes into IPython. Everytime I try the indentation is screwed up and I get following error message:
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Is it a good idea to index datetime field in mysql?
I am working on designing a large database. In my application I will have many rows for example I currently have one table with 4 million records. Most of my queries use datetime clause to select data. Is it a good idea to index datetime fields in mysql database?
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