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Convert string to binary in python
... "hello world"
>>> map(bin, bytearray(st))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: string argument without an encoding
Because, as explained in the link above, if the source is a string, you must also give the encoding:
>>>...
string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
...For performance, IsNullOrWhiteSpace is not ideal but is
good. The method calls will result in a small performance penalty.
Further, the IsWhiteSpace method itself has some indirections that can
be removed if you are not using Unicode data. As always, premature
optimization may be evil, but i...
Regex for quoted string with escaping quotes
...ec 21 '16 at 19:47
Philip Kirkbride
15.8k2929 gold badges9797 silver badges183183 bronze badges
answered Oct 30 '08 at 11:59
...
Laravel 4 Eloquent Query Using WHERE with OR AND OR?
...ink you will have to add the use keyword to use the attributes variable inside the where.
– Meneer Venus
Jul 18 '15 at 14:40
...
Java: Clear the console
...
They are ANSI escape codes. Specifically clear screen, followed by home. But why is 'home' necessary?
– jdurston
Nov 12 '15 at 20:01
...
How to avoid “ConcurrentModificationException” while removing elements from `ArrayList` while iterat
...
Use an Iterator and call remove():
Iterator<String> iter = myArrayList.iterator();
while (iter.hasNext()) {
String str = iter.next();
if (someCondition)
iter.remove();
}
...
How to generate all permutations of a list?
... It's using nested generators, which each yield to the previous one up the call stack, in case that's not clear. It uses O(n) memory, which is good.
– cdunn2001
Jul 19 '11 at 19:02
...
What does character set and collation mean exactly?
...set
of rules (only one rule in this case):
"compare the encodings." We call this
simplest of all possible collations a
binary collation.
But what if we want to say that the
lowercase and uppercase letters are
equivalent? Then we would have at
least two rules: (1) treat the
lower...
Sort a single String in Java
...
toCharArray followed by Arrays.sort followed by a String constructor call:
import java.util.Arrays;
public class Test
{
public static void main(String[] args)
{
String original = "edcba";
char[] chars = original.toCharArray();
Arrays.sort(chars);
Strin...
hasNext in Python iterators?
...ethod to put the first element back after I have checked that it exists by calling next().
– Giorgio
Dec 24 '12 at 20:26
16
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