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Why doesn't C have unsigned floats?
...there is no equivalent machine code operations for the CPU to execute. So it would be very inefficient to support it.
If C++ did support it, then you would be sometimes using an unsigned float and not realizing that your performance has just been killed. If C++ supported it then every floating ...
RegEx to make sure that the string contains at least one lower case char, upper case char, digit and
...])(?=.*[A-Z])(?=.*\W)
A short explanation:
(?=.*[a-z]) // use positive look ahead to see if at least one lower case letter exists
(?=.*[A-Z]) // use positive look ahead to see if at least one upper case letter exists
(?=.*\d) // use positive look ahead to see if at least o...
How can I know when an EditText loses focus?
I need to catch when an EditText loses focus, I've searched other questions but I didn't find an answer.
5 Answers
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Creating email templates with Django
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edited Feb 12 '11 at 23:08
Eric Clack
1,6021414 silver badges2323 bronze badges
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What are the differences between a HashMap and a Hashtable in Java?
...s subclasses is LinkedHashMap, so in the event that you'd want predictable iteration order (which is insertion order by default), you could easily swap out the HashMap for a LinkedHashMap. This wouldn't be as easy if you were using Hashtable.
Since synchronization is not an issue for you, I'd rec...
How do I strip non alphanumeric characters from a string and keep spaces?
...hanumber characters but keeps spaces. This is to clean search input before it hits the db. Here's what I have so far:
5 Ans...
git submodule tracking latest
We are moving our (huge) project to git and we are thinking about using submodules. Our plan is to have three different heads in the superproject: release,stable,latest. The project leads will handle the release and stable branches. They will move the submodules as required.
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Convert char to int in C and C++
...nds on what you want to do:
to read the value as an ascii code, you can write
char a = 'a';
int ia = (int)a;
/* note that the int cast is not necessary -- int ia = a would suffice */
to convert the character '0' -> 0, '1' -> 1, etc, you can write
char a = '4';
int ia = a - '0';
/* check ...
How can I use mySQL replace() to replace strings in multiple records?
We have a database that has a bunch of records with some bad data in one column, in which an embedded editor escaped some stuff that shouldn't have been escaped and it's breaking generated links.
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Is there a PHP function that can escape regex patterns before they are applied?
...king for:
Description
string preg_quote ( string $str [, string $delimiter = NULL ] )
preg_quote() takes str and puts a
backslash in front of every character
that is part of the regular expression
syntax. This is useful if you have a
run-time string that you need to match
in so...