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Secondary axis with twinx(): how to add to legend?
...want to show them with legend() , but I only succeed to get the labels of one axis in the legend:
6 Answers
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What is the difference between currying and partial application?
...re of lambda(z){z(x(y))} with passed-in the values of x and y to f(x,y).
One way to use partial application is to define functions as partial applications of generalized functions, like fold:
function fold(combineFunction, accumulator, list) {/* ... */}
function sum = curry(fold)(lambda(accum...
sql primary key and index
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The damage of unused indexes are very harmful indeed. For one thing, indexes eat up storage. For another thing, it slows down writes and updates. Always delete indexes that are not going to be used.
– Pacerier
Jul 6 '12 at 7:40
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How to initialise memory with new operator in C++?
...surprisingly little-known feature of C++ (as evidenced by the fact that no-one has given this as an answer yet), but it actually has special syntax for value-initializing an array:
new int[10]();
Note that you must use the empty parentheses — you cannot, for example, use (0) or anything else (whi...
Check if two unordered lists are equal [duplicate]
... the cleanest approach here. I think this answer ought to be the accepted one.
– Will
Oct 24 '13 at 11:05
2
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Refresh image with a new one at the same url
...t will make the browser look again for the image instead of retrieving the one in the cache.
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What's the point of 'const' in the Haskell Prelude?
... Ahh so it's more of a 'function generator' - I use it with one argument, and it gives me a function (taking one argument) that always returns a constant value. So map (const 42) [1..5] results in [42, 42, 42, 42, 42].
– stusmith
Sep 13 '11 at 14...
How to handle exceptions in a list comprehensions?
...l the statements you want, so delegating the evaluation of the exception-prone sub-expression to a function, as you've noticed, is one feasible workaround (others, when feasible, are checks on values that might provoke exceptions, as also suggested in other answers).
The correct responses to the qu...
SQL - find records from one table which don't exist in another
...two tables:
This is the shortest statement, and may be quickest if your phone book is very short:
SELECT *
FROM Call
WHERE phone_number NOT IN (SELECT phone_number FROM Phone_book)
alternatively (thanks to Alterlife)
SELECT *
FROM Call
WHERE NOT EXISTS
(SELECT *
FROM Phone_book
...
TypeScript function overloading
...erent if we compare to OO languages. In answer to another SO question, someone explained it with a nice example: Method overloading?.
Basically, what we are doing is, we are creating just one function and a number of declarations so that TypeScript doesn't give compile errors. When this code is com...