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How can I force division to be floating point? Division keeps rounding down to 0?
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You can cast to float by doing c = a / float(b). If the numerator or denominator is a float, then the result will be also.
A caveat: as commenters have pointed out, this won't work if b might be something other than an integer or ...
Convert data.frame columns from factors to characters
...ata frame. One option is to use the above but then use type.convert after casting everything to character, then recast factors back to character again.
– Shane
May 17 '10 at 18:56
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Increment a value in Postgres
...aracter varying + integer LINE 2: SET total = total + 1 Solved by casting the value as integer like this SET total = total::int + 1
– Stew-au
Oct 31 '12 at 3:05
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What is a wrapper class?
...ed to write a big code . However, the same can be achieved with the simple casting technique as code snippet can be achieved as below
double d = 135.0;
int integerValue = (int) d ;
Though double value is explicitly converted to integer value also called as downcasting.
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g++ undefined reference to typeinfo
...Such access can happen when you create an object of the class, use dynamic_cast etc.
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getApplicationContext(), getBaseContext(), getApplication(), getParent()
...istered in the Manifest, you should never call getApplicationContext() and cast it to your application, because it may not be the application instance (which you obviously experienced with the test framework).
getParent() returns object of the activity if the current view is a child..In other words...
How to round a number to significant figures in Python
...Wow, your answer needs to be really read from top to bottom ;) This double-cast trick is dirty, but neat. (Note that 1999 formatted as 2000.0 suggests 5 significant digits, so it has to go through {:g} again.) In general, integers with trailing zeros are ambiguous with regard to significant figures,...
How to initialize a struct in accordance with C programming language standards
...come clear (thanks to your and @philant's example) that there must exist a cast if the initializer is not used at the time of object creation. However, I have now also learned that if initializers are used at a time other than object creation (as in your example) then it is referred to as a compound...
Throw an error in a MySQL trigger
...cat('MyTriggerError: Trying to insert a negative value in trigger_test: ', cast(new.id as char));
signal sqlstate '45000' set message_text = msg;
end if;
end
//
delimiter ;
-- run the following as seperate statements:
insert into trigger_test values (1), (-1), (2); -- everything fails a...
how to concatenate two dictionaries to create a new one in Python? [duplicate]
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It does work in Python 3, but you have to cast the dict_items objects to real list objects. This is another case where Python 3 prioritised minor performance optimisations over simplicity and ease of use.
– Carl Smith
Apr 12 '17...