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Java: when to use static methods
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One rule-of-thumb: ask yourself "Does it make sense to call this method, even if no object has been constructed yet?" If so, it should definitely be static.
So in a class Car you might have a method:
double convertMpgToKpl(double mpg)
...which would be static, because one mig...
How to require a controller in an angularjs directive
...});
Each directive will get its own instance of the controller, but this allows you to share the logic between as many components as you want.
Require a Controller
If you want to share the same instance of a controller, then you use require.
require ensures the presence of another directive an...
Does every Javascript function have to return a value?
...ow level, the return is translated into some sort of jump. If a function really returned nothing at all, there would be no way of knowing what and when to call the next function, or to call event handlers and the like.
So to recap: No, a JS function needn't return anything as far as your code goes....
How can I get dict from sqlite query?
...ow and I tried connection.row_factory = dict_factory as shown but cur.fetchall() is still giving me a list of tuples - any idea why this is not working?
– displayname
Dec 7 '16 at 10:51
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How does RewriteBase work in .htaccess
... want to clear up some details on htaccess.. does a ReWriteBase set it for all rules in the htaccess following what its declaration? is there a way to unset it, can it be reset?
– Damon
Apr 25 '13 at 15:32
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Reference assignment operator in PHP, =&
...rror changes made to another, instead of copying the existing data.
It's called assignment by reference, which, to quote the manual, "means that both variables end up pointing at the same data, and nothing is copied anywhere".
The only thing that is deprecated with =& is "assigning the result ...
Bare asterisk in function arguments?
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Bare * is used to force the caller to use named arguments - so you cannot define a function with * as an argument when you have no following keyword arguments.
See this answer or Python 3 documentation for more details.
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Check if a Python list item contains a string inside another string
...abc-456']
if any("abc" in s for s in some_list):
# whatever
If you really want to get all the items containing abc, use
matching = [s for s in some_list if "abc" in s]
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Create zip file and ignore directory structure
... sometime it just doesn't work... prefer @czerasz link ;) which basically is a pushd popd combo
– TecHunter
Oct 28 '16 at 8:33
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How to check if a float value is a whole number
... @PeterM: The method indeed only returns True if there are no decimals at all. There may be a misunderstanding on the part of the OP about floating point arithmetic and precision, of course.
– Martijn Pieters♦
Feb 5 '14 at 17:17
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