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MySQL stored procedure vs function, which would I use when?
I'm looking at MySQL stored procedures and function. What is the real difference?
5 Answers
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FixedThreadPool vs CachedThreadPool: the lesser of two evils
...similar question suggested they were better suited for longer lived tasks and with my very limited knowledge of multithreading, I considered the average life of the threads (several minutes) " long lived ".
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地图组件（高德地图） · App Inventor 2 中文网
...The features parameter will be a list of
feature descriptions that can be converted into components using the
根据描述生成特征 method.
LoadError(url,responseCode,errorMessage)
The LoadError event is run when an error occurs while processing a feature collection
document at the given u...
Instance variables vs. class variables in Python
...time, so it would be sufficient to have the attributes only once per class and not per instance. If there would be more than one instance (which won't happen), all instance should have the same configuration. I wonder which of the following options would be better or more "idiomatic" Python.
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How do I profile memory usage in Python?
I've recently become interested in algorithms and have begun exploring them by writing a naive implementation and then optimizing it in various ways.
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Why is exception handling bad?
Google's Go language has no exceptions as a design choice, and Linus of Linux fame has called exceptions crap. Why?
15 Answ...
Large-scale design in Haskell? [closed]
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I talk a bit about this in Engineering Large Projects in Haskell and in the Design and Implementation of XMonad. Engineering in the large is about managing complexity. The primary code structuring mechanisms in Haskell for managing complexity are:
The type system
Use the type system to ...
data.table vs dplyr: can one do something well the other can't or does poorly?
... remember is for it to return a list so that each element of the list gets converted to a column.
In dplyr, cannot do that. Have to resort to do() depending on how sure you are as to whether your function would always return a single value. And it is quite slow.
Once again, data.table's synta...
Evaluating a mathematical expression in a string
...ppend(toks[0])
def pushUMinus(self, strg, loc, toks):
if toks and toks[0] == '-':
self.exprStack.append('unary -')
def __init__(self):
"""
expop :: '^'
multop :: '*' | '/'
addop :: '+' | '-'
integer :: ['+' | '-'] '0'..'9'+
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How to get the input from the Tkinter Text Widget?
...) The -1c deletes 1 character, while -2c would mean delete two characters, and so on.
def retrieve_input():
input = self.myText_Box.get("1.0",'end-1c')
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