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How does one make a Zip bomb?
...it produces 4^16 (4,294,967,296) directories. Because each directory needs allocation space of N bytes, it ends up being huge. The dll file at the end is 0 bytes.
Unzipped the first directory alone \42\lib 0\book 0\chapter 0\doc 0\0.dll results in 4gb of allocation space.
...
Using parameters in batch files at Windows command line
...cessed in batch files with the notation %1 to %9. There are also two other tokens that you can use:
%0 is the executable (batch file) name as specified in the command line.
%* is all parameters specified in the command line -- this is very useful if you want to forward the parameters to another pr...
What are sessions? How do they work?
... in your analogy, GNASHEU329 is the user password, which generates an auth token that expires until a certain time; Mr Banks can then use the auth token to make several successive withdrawls without having to repeatedly give the teller his password?
– Daniel Lizik
...
Remove a string from the beginning of a string
...e changed for if (0 === strpos($str, $prefix)) to avoid unnecessary memory allocation while keeping the same readability :)
– xDaizu
Feb 1 '17 at 9:17
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Creating .pem file for APNS?
...he php script on my local web server (Xampp). I am able to get the device token , and i am using it in the php script. The php script is able to connect and send payload data. But still then i am not able to get the PUSH Notification. What is the problem ? Does the notifications take time to reach...
Favorite (Clever) Defensive Programming Best Practices [closed]
...
Allocate a reasonable chunk of memory when the application starts - I think Steve McConnell referred to this as a memory parachute in Code Complete.
This can be used in case something serious goes wrong and you are required ...
原子vector的一种实现源码(atomic-vector) - C/C++ - 清泛网 - 专注C/C++及内核技术
...e size of an AtomicVector is with the ensureSize
* method. It does not reallocate the internal storage to grow; it allocates a
* new AtomicVector and chains to that for increased capacity. This means that
* if the initial size is too low, reading and modifying elements at high
* indexes will...
How to initialize static variables
...t of times the array could potentially be initialized - i.e., lots of heap allocation. Since php is written in C, I'd imagine the translation would resolve to a function returning a pointer to an Array per call... Just my two cents.
– zeboidlund
Aug 22 '12 at ...
How to fix “Headers already sent” error in PHP
...n it's mostly
leading whitespace, text or HTML before the opening <?php token.
<?php
# There's a SINGLE space/newline before <? - Which already seals it.
Similarly it can occur for appended scripts or script sections:
?>
<?php
PHP actually eats up a single linebreak after clos...
startsWith() and endsWith() functions in PHP
...s so far seem to do loads of unnecessary work, strlen calculations, string allocations (substr), etc. The 'strpos' and 'stripos' functions return the index of the first occurrence of $needle in $haystack:
function startsWith($haystack,$needle,$case=true)
{
if ($case)
return strpos($hays...