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How to import load a .sql or .csv file into SQLite?
... It is giving error "cannot open db.sql",when I am using .read commond.
– Dory
Nov 24 '14 at 5:41
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What exactly is nullptr?
...swell as long -> void* is both equally costly. So if NULL is 0L on your compiler, then a call f(NULL) will be ambiguous given those two functions. Not so with nullptr of course.
– Johannes Schaub - litb
Aug 15 '09 at 22:14
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What is a “static” function in C?
...was about plain c functions, not c++ static methods, as clarified in comments.
12 Answers
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When would you use the different git merge strategies?
...where many branches have had independent development and it's all ready to come together into a single head.
An octopus branch merges multiple heads in one commit as long as it can do it cleanly.
For illustration, imagine you have a project that has a master, and then three branches to merge in (c...
object==null or null==object?
...luate to a boolean value, so unless the constant is a boolean, you'd get a compilation error either way you put the arguments. (and if it is a boolean, you shouldn't be using == anyway...)
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MySQL vs MongoDB 1000 reads
...For example, consider a design that persisted a lot of information about a complicated entity in a normalised fashion. This could easily use dozens of tables in MySQL (or any relational db) to store the data in normal form, with many indexes needed to ensure relational integrity between tables.
Now...
jQuery - prevent default, then continue default
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How to check the version of GitLab?
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edited Jun 20 at 9:12
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answered Mar 3 '14 at 4:03
MaximMaxim
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Change column type from string to float in Pandas
...y what you want, but what if you wanted to save some memory and use a more compact dtype, like float32, or int8?
to_numeric() gives you the option to downcast to either 'integer', 'signed', 'unsigned', 'float'. Here's an example for a simple series s of integer type:
>>> s = pd.Series([1, 2...
What integer hash function are good that accepts an integer hash key?
...er that is in the order of your hash size (2^32 in the example) and has no common factors with it. This way the hash function covers all your hash space uniformly.
Edit: The biggest disadvantage of this hash function is that it preserves divisibility, so if your integers are all divisible by 2 or b...