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Why use prefixes on member variables in C++ classes
...ul with using a leading underscore. A leading underscore before a capital letter in a word is reserved.
For example:
_Foo
_L
are all reserved words while
_foo
_l
are not. There are other situations where leading underscores before lowercase letters are not allowed. In my specific case, I fo...
How do you save/store objects in SharedPreferences on Android?
...ic User getUserInfo(Context con)
{
String id = getData(con, Constants.USER_ID, null);
String name = getData(con, Constants.USER_NAME, null);
if(id != null && name != null)
{
User user = new User(); //Hope you will have a user Object.
user.setId(id);
...
Unicode character for “X” cancel / close?
... ×-mark (the multiplication symbol), × in HTML, for that?
"x" (letter) should not be used to represent anything else other than the letter X.
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I need to store postal codes in a database. How big should the column be?
...and over bulk mail to the Royal Mail presorted by the head district (first letter/two letters) of the postcode, then you can have it delivered by MailSort, which is cheaper than regular second class mail. That's just one example.
– Richard Gadsden
Jul 15 '09 a...
Random hash in Python
...
import random
import string
def random_string(length):
pool = string.letters + string.digits
return ''.join(random.choice(pool) for i in xrange(length))
Gives you flexibility on the length of the string.
>>> random_string(64)
'XTgDkdxHK7seEbNDDUim9gUBFiheRLRgg7HyP18j6BZU5Sa7AXi...
A Better Django Admin ManyToMany Field Widget
...
you could try using a raw id in the admin.
and the django docs:
http://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.raw_id_fields
if you are looking for something with auto-complete you might want to look at t...
Write a function that returns the longest palindrome in a given string
...ar i = 0; i < s.length - 1; i++) {
var c = s[i]; // the current letter
var l; // length of the palindrome
if (s[i] === s[i+1]) { // this is a 2 letter palindrome
l = getsize(s, i, i+1);
}
if (i+2 < s.length && s[i] === s[i+2]) { // 3 ...
How to append multiple values to a list in Python
...
letter = ["a", "b", "c", "d"]
letter.extend(["e", "f", "g", "h"])
letter.extend(("e", "f", "g", "h"))
print(letter)
...
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'e', 'f', 'g', 'h']
...
Regexp Java for password validation
... # a digit must occur at least once
(?=.*[a-z]) # a lower case letter must occur at least once
(?=.*[A-Z]) # an upper case letter must occur at least once
(?=.*[@#$%^&+=]) # a special character must occur at least once
(?=\S+$) # no whitespace allowed in the entire st...
Difference between Char.IsDigit() and Char.IsNumber() in C#
...by the Unicode designation "Nd" (number, decimal digit). The value is 8.
LetterNumber
Number represented by a letter, instead of a decimal digit, for example, the Roman numeral for five, which is "V". The indicator is signified by the Unicode designation "Nl" (number, letter). The value is 9.
...