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Why does PHP 5.2+ disallow abstract static class methods?
...se you're not familiar with late static bindings, note that code like this doesn't work the way you might expect:
<?php
abstract class ParentClass {
static function foo() {
echo "I'm gonna do bar()";
self::bar();
}
abstract static function bar();
}
class ChildClass...
When should I write the keyword 'inline' for a function/method?
...e cannot be used in other translation units. Linker needs to make sure it doesn't accidentally use a statically defined variable/function from another translation unit.
extern - use this variable/function name in this translation unit but don't complain if it isn't defined. The linker will sort it...
What does “mro()” do?
...post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f2010692%2fwhat-does-mro-do%23new-answer', 'question_page');
}
);
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...
Why does PEP-8 specify a maximum line length of 79 characters? [closed]
...
10 years later: Doesn't that just depend on how you set up line wrapping. Line wrapping can be as intelligent or stupid as you want it. If it's uncomfortable to read that's just a failure of your editor.
– David Mulder
...
Server.Transfer Vs. Response.Redirect
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Does this work with CSHTML pages with web matrix? I can't seem to get it to work when doing a Server.Transfer to a CSHTML page such as Server.Transfer("~/somepage.cshtml",true) but seems to work for other types of pages. Yes ...
When to use SELECT … FOR UPDATE?
...atabase system is using.
MyISAM in MySQL (and several other old systems) does lock the whole table for the duration of a query.
In SQL Server, SELECT queries place shared locks on the records / pages / tables they have examined, while DML queries place update locks (which later get promoted to exc...
How do I convert Long to byte[] and back in java
...mp; 0xFF); We could simply use result |= b[i]; as and with 0xFF for a bit doesnt modify anything.
– Vipul
Aug 3 '15 at 9:58
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Get domain name from given url
...e java.net.URI. java.net.URL has a bunch of problems -- its equals method does a DNS lookup which means code using it can be vulnerable to denial of service attacks when used with untrusted inputs.
"Mr. Gosling -- why did you make url equals suck?" explains one such problem. Just get in the habit...
How does a public key verify a signature?
..., msg);
var decryptedMessage = decrypt(pub_key, encryptedMessage); // HOW DOES THIS WORK???
print(msg == decryptedMessage == 'secret message'); // True
We know that both example #1 and #2 work. Example #1 makes intuitive sense, while example #2 begs the original question.
Turns out, elliptic c...
Is inline assembly language slower than native C++ code?
...ines or when you have to access features your favorite high-level language does not expose. Do you want a touch of this complexity? Read this awesome answer here on SO.
Why this?
First of all because compilers can do optimizations that we can't even imagine (see this short list) and they will do ...