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How to switch position of two items in a Python list?
...e', 'email', 'password2', 'password1', 'first_name',
'last_name', 'next', 'newsletter']
a, b = i.index('password2'), i.index('password1')
i[b], i[a] = i[a], i[b]
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Is it possible to define more than one function per file in MATLAB, and access them from outside tha
... likely much better options for organizing your functions and files.
For example, let's say you have a main function A in an m-file A.m, along with local functions D, E, and F. Now let's say you have two other related functions B and C in m-files B.m and C.m, respectively, that you also want to be ...
What's the fastest way to read a text file line-by-line?
I want to read a text file line by line. I wanted to know if I'm doing it as efficiently as possible within the .NET C# scope of things.
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Compile time string hashing
...ceeded in implementing a compile-time CRC32 function with the use of constexpr. The problem with it is that at the time of writing, it only works with GCC and not MSVC nor Intel compiler.
Here is the code snippet:
// CRC32 Table (zlib polynomial)
static constexpr uint32_t crc_table[256] = {
0x...
What is the difference between Polymer elements and AngularJS directives?
On the Polymer Getting Started page, we see an example of Polymer in action:
10 Answers
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stdlib and colored output in C
...'t bother with libraries, the code is really simple.
More info is here.
Example in C:
#include <stdio.h>
#define ANSI_COLOR_RED "\x1b[31m"
#define ANSI_COLOR_GREEN "\x1b[32m"
#define ANSI_COLOR_YELLOW "\x1b[33m"
#define ANSI_COLOR_BLUE "\x1b[34m"
#define ANSI_COLOR_MAGENTA "\x1b[...
Position of least significant bit that is set
...position of the least significant bit that is set in an integer, e.g. for 0x0FF0 it would be 4.
22 Answers
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How to add column if not exists on PostgreSQL?
Question is simple. How to add column x to table y , but only when x column doesn't exist ? I found only solution here how to check if column exists.
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How does deriving work in Haskell?
...se to implement it in its own way. There's lots of work on how to make it extensible however.
Derive is a tool for Haskell to let you write your own deriving mechanisms.
GHC used to provide a derivable type class extension called Generic Classes, but it was rarely used, as it was somewhat weak.
Th...
In Java, what does NaN mean?
...meters
that cause the operation to produce
some undefined result. For example,
0.0 divided by 0.0 is arithmetically undefined. Taking the square root of a
negative number is also undefined.
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