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What does “|=” mean? (pipe equal operator)
...tic final int DEFAULT_SOUND = 1;
public static final int DEFAULT_VIBRATE = 2; // is the same than 1<<1 or 10 in binary
public static final int DEFAULT_LIGHTS = 4; // is the same than 1<<2 or 100 in binary
So you can use bit-wise OR to add flags
int myFlags = DEFAULT_SOUND | DEFAULT_VI...
Decreasing for loops in Python impossible?
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for n in range(6,0,-1):
print n
# prints [6, 5, 4, 3, 2, 1]
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Is there a way to access the “previous row” value in a SELECT statement?
...here any way I can do this directly in SQL? I'm using Microsoft SQL Server 2008.
7 Answers
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How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
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2 Answers
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Two-dimensional array in Swift
I get so confused about 2D arrays in Swift. Let me describe step by step. And would you please correct me if I am wrong.
8 ...
Convert a String representation of a Dictionary to a dictionary?
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1219
Starting in Python 2.6 you can use the built-in ast.literal_eval:
>>> import ast
>...
Best way to format integer as string with leading zeros? [duplicate]
...n use the zfill() method to pad a string with zeros:
In [3]: str(1).zfill(2)
Out[3]: '01'
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Variable's scope in a switch case [duplicate]
..., however, create further nested scopes with braces as follows:
int key = 2;
switch (key) {
case 1: {
String str = "1";
return str;
}
case 2: {
String str = "2";
return str;
}
}
The resulting code will now compile successfully since the variable named str in each case clause i...
How do you know when to use fold-left and when to use fold-right?
...re, you use a left fold. Example (haskell-style pseudocode)
foldl (-) [1, 2, 3] == (1 - 2) - 3 == 1 - 2 - 3 // - is left-associative
If your operator is right-associative (right fold), the parentheses would be set like this:
A x (B x (C x D))
Example: Cons-Operator
foldr (:) [] [1, 2, 3] == 1...