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Google Authenticator implementation in Python
...nd TOTP to write this script.
import hmac, base64, struct, hashlib, time, array
def Truncate(hmac_sha1):
"""
Truncate represents the function that converts an HMAC-SHA-1
value into an HOTP value as defined in Section 5.3.
http://tools.ietf.org/html/rfc4226#section-5.3
"""
...
Swift: declare an empty dictionary
...to create an empty dictionary one should use [:] same as while declaring array as [] :
18 Answers
...
A better similarity ranking algorithm for variable length strings
...ng>();
// Tokenize the string and put the tokens/words into an array
string[] Words = Regex.Split(str, @"\s");
// For each word
for (int w = 0; w < Words.Length; w++)
{
if (!string.IsNullOrEmpty(Words[w]))
{
// F...
How to use split?
...a native string method.
If you use .split() on a string, then you get an array back with the substrings:
var str = 'something -- something_else';
var substr = str.split(' -- ');
// substr[0] contains "something"
// substr[1] contains "something_else"
If this value is in some field you could als...
How to get multiple select box values using jQuery?
...
Using the .val() function on a multi-select list will return an array of the selected values:
var selectedValues = $('#multipleSelect').val();
and in your html:
<select id="multipleSelect" multiple="multiple">
<option value="1">Text 1</option>
<option valu...
How to check null objects in jQuery
...
The lookup function returns an array of matching elements. You could check if the length is zero. Note the change to only look up the elements once and reuse the results as needed.
var elem = $("#btext" + i);
if (elem.length != 0) {
elem.text("Branch...
What does void* mean and how to use it?
... int (*compar)(const void *, const void *));
base is the address of an array, nmemb is the number of elements in the array, size is the size of each element, and compar is a pointer to a function that compares two elements of the array. It gets called like so:
int iArr[10];
double dArr[30];
lo...
How to convert a char to a String?
...acked by a char[] (over-allocated by StringBuilder() to 16), only for that array to be defensively copied by the resulting String.
String.valueOf(char) "gets in the back door" by wrapping the char in a single-element array and passing it to the package private constructor String(char[], boolean), w...
C library function to perform sort
...t() is the function you're looking for. You call it with a pointer to your array of data, the number of elements in that array, the size of each element and a comparison function.
It does its magic and your array is sorted in-place. An example follows:
#include <stdio.h>
#include <stdlib....
Pandas convert dataframe to array of tuples
...ve back to the database. This requires me to convert the dataframe into an array of tuples, with each tuple corresponding to a "row" of the dataframe.
...