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Print PHP Call Stack
...ery long, difficult to read. All you usuall ever want is "what called what from where?" Here is a simple static function solution. I usually put it in a class called 'debug', which contains all of my debugging utility functions.
class debugUtils {
public static function callStack($stacktrace) {...
How to get the last character of a string in a shell?
...acter you should just use -1 as the index since the negative indices count from the end of the string:
echo "${str: -1}"
The space after the colon (:) is REQUIRED.
This approach will not work without the space.
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Split string in Lua?
...o find the location to split the string at.
Example using string.gmatch() from Lua 5.1 Reference Manual:
t = {}
s = "from=world, to=Lua"
for k, v in string.gmatch(s, "(%w+)=(%w+)") do
t[k] = v
end
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How do PHP sessions work? (not “how are they used?”)
... about Passing the Session ID, which explains how the session id is passed from page to page, using a cookie, or in URLs -- and which configuration options affect this.
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What are the disadvantages to declaring Scala case classes?
...'t necessarily in the contract. At least, you could explicitly exclude it from the contract when you first write the class.
– herman
Oct 6 '13 at 9:13
...
String comparison in Python: is vs. == [duplicate]
... I though that for checking if a string was modified (e.g. result returned from re.sub) comparing large strings for is equality instead of == would be faster. This was barely the case an timeit showed a mere 0.4% speed improvement. In my case it's not worth the risk that re.sub starts changing the s...
How to print an exception in Python?
...the sys.exc_info() function and the traceback.print_exc() function gets it from there. You’d only ever need to pass in an exception explicitly when not handling an exception or when you want to show info based on a different exception.
– Martijn Pieters♦
Oc...
Forward an invocation of a variadic function in C
...'macro magic', but you are guaranteed that calling the v... style function from a variadic function like this will work:
#include <stdarg.h>
int m_printf(char *fmt, ...)
{
int ret;
/* Declare a va_list type variable */
va_list myargs;
/* Initialise the va_list variable with...
Padding is invalid and cannot be removed?
...zation vector are used for encoding and decoding, this issue does not come from data decoding but from data encoding.
After you called Write method on a CryptoStream object, you must ALWAYS call FlushFinalBlock method before Close method.
MSDN documentation on CryptoStream.FlushFinalBlock meth...
How do I make curl ignore the proxy?
...
I assume curl is reading the proxy address from the environment variable http_proxy and that the variable should keep its value. Then in a shell like bash, export http_proxy=''; before a command (or in a shell script) would temporarily change its value.
(See curl's m...