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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
...
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...
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 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...
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...
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...
Mvn install or Mvn package
...
from http://maven.apache.org/guides/getting-started/maven-in-five-minutes.html
package: take the compiled code and package it in its distributable
format, such as a JAR.
install: install the package into the local ...
Download File Using jQuery
...t:
$('a').click(function(e) {
e.preventDefault(); //stop the browser from following
window.location.href = 'uploads/file.doc';
});
<a href="no-script.html">Download now!</a>
Even if there's no Javascript, at least this way the user will get some feedback.
...
Handling a colon in an element ID in a CSS selector [duplicate]
...tion are incorrect. You need to escape both the underscore (to prevent IE6 from ignoring the rule altogether in some edge cases) and the colon character for the selector to work properly across different browsers.
Technically, the colon character can be escaped as \:, but that doesn’t work in IE ...
What is the easiest way to push an element to the beginning of the array?
... between shift and unshift as to which adds to the array and which removes from the array, drop an 'f' from the names mentally and you get an all-too-clear picture as to the direction. (And then you have to remember that these methods don't work on the "end" of the array. ;)
– ...