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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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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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Non-Relational Database Design [closed]
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I think you have to consider that the non-relational DBMS differ a lot regarding their data model and therefore the conceptual data design will also differ a lot. In the thread Data Design in Non-Relational Databases of the NOSQL Google group the di...
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...
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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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...
Disable mouse scroll wheel zoom on embedded Google Maps
...gt;</div>
<iframe src="https://mapsengine.google.com/map/embed?mid=some_map_id" width="640" height="480"></iframe>
</html>
In my CSS i created the class:
.overlay {
background:transparent;
position:relative;
width:640px;
height:480px; /* your iframe height ...
What is the difference between graph search and tree search?
...t plus heuristic value, and so on.
The algorithm stated above is actually called tree search. It will visit a state of the underlying problem graph multiple times, if there are multiple directed paths to it rooting in the start state. It is even possible to visit a state an infinite number of times...
Any way to Invoke a private method?
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when I've done this in the past, I've also called method.setAccessible(false) after calling the method, but I have no idea if this is necessary or not.
– shsteimer
May 19 '09 at 1:53
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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&...