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Python SQL query string formatting
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Please never ever do this. It's called SQL injection and it's really dangerous. Pretty much every Python database library provides a facility for using parameters. If you catch yourself using format() with SQL strings, it's a major code smell.
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Are Mutexes needed in javascript?
...hreads in the implementation. Functions like setTimeout() and asynchronous callbacks need to wait for the script engine to sleep before they're able to run.
That means that everything that happens in an event must be finished before the next event will be processed.
That being said, you may need a...
Evaluating a mathematical expression in a string
...; eval_expr(evil) #doctest:+IGNORE_EXCEPTION_DETAIL
Traceback (most recent call last):
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TypeError:
>>> eval_expr("9**9")
387420489
>>> eval_expr("9**9**9**9**9**9**9**9") #doctest:+IGNORE_EXCEPTION_DETAIL
Traceback (most recent call last):
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ValueError:
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angular.service vs angular.factory
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Would it be better to call it an object constructor than Newable?
– marksyzm
May 15 '14 at 11:21
2
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Passing functions with arguments to another function in Python?
... retrieve the passed function's result, wouldn't it be better if Perform() called "return f()" rather than just calling f().
– mhawke
Apr 30 '09 at 1:55
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Logcat not displaying my log calls
...d wanted to learn how to debug my apps. I can't seem to have my Log.i|d|v calls displayed in the LogCat.
31 Answers
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Using global variables between files?
.... Here is a clean way to solve this problem: move all globals to a file, I call this file settings.py. This file is responsible for defining globals and initializing them:
# settings.py
def init():
global myList
myList = []
Next, your subfile can import globals:
# subfile.py
import set...
Why does Unicorn need to be deployed together with Nginx?
...ee how later on).
Fortunately, such a reverse proxy already exists and is called nginx.
The decision to handle only fast clients, greatly simplifies the design of Unicorn and allows a much simpler and smaller codebase, at the cost of some added complexity on the deployment department (ie. you have...
Finding index of character in Swift String
... text = "abc"
let index2 = text.index(text.startIndex, offsetBy: 2) //will call succ 2 times
let lastChar: Character = text[index2] //now we can index!
let characterIndex2 = text.index(text.startIndex, offsetBy: 2)
let lastChar2 = text[characterIndex2] //will do the same as above
let range: Range&...
Why should I avoid using Properties in C#?
...rties make the client code much simpler to read than the equivalent method calls. I agree that developers need to know that properties are basically methods in disguise - but I think that educating developers about that is better than making code harder to read using methods. (In particular, having ...