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Unmangling the result of std::type_info::name
... C++11 features, here is how it can be done in C++98, the file type.cpp is now:
#include "type.hpp"
#ifdef __GNUG__
#include <cstdlib>
#include <memory>
#include <cxxabi.h>
struct handle {
char* p;
handle(char* ptr) : p(ptr) { }
~handle() { std::free(p); }
};
std::st...
How to color System.out.println output? [duplicate]
... state of computers and their attached peripheral devices. These are also known as control sequences, reflecting their use in device control.
Backgound on ANSI Escape Sequences
However, it gets even easier than that in video text terminals, as these terminals use ANSI escape sequences. From that ...
How do I analyze a program's core dump file with GDB when it has command-line parameters?
...need to pass it again
objdump -s core can be used to dump memory in bulk
Now for the full educational test setup:
main.c
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int myfunc(int i) {
*(int*)(NULL) = i; /* line 7 */
return i - ...
How do I update/upsert a document in Mongoose?
...
Mongoose now supports this natively with findOneAndUpdate (calls MongoDB findAndModify).
The upsert = true option creates the object if it doesn't exist. defaults to false.
var query = {'username': req.user.username};
req.newData.u...
pip broke. how to fix DistributionNotFound error?
...ich probably caused me this headache.
I think this is how you should do it nowadays..
$ sudo apt-get install python-pip python-dev build-essential
$ sudo pip install --upgrade pip
$ sudo pip install --upgrade virtualenv
...
Insert into … values ( SELECT … FROM … )
...
The documentation does list this (now?): this syntax is INSERT INTO ... VALUES ([expr], [expr], ...) and one of the paths in [expr] is {{NOT} EXISTS} ([select-stmt]) - note that the paranthesis around the select statement are required ({} meaning optional)
...
Get Element value with minidom with Python
..."?! That little nugget cost me 30 minutes of tearing my hair out. I'm bald now. Thanks, minidom.
– Assaf Lavie
Mar 15 '10 at 5:56
10
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What does |= (ior) do in Python?
...search |= so I'm having trouble finding relevant documentation. Anybody know?
8 Answers
...
When should I use nil and NULL in Objective-C?
...
This accepted answer fails to acknowledge that [NSNull null] is a very different beast. To quote from NSNull Class Reference, "The NSNull class defines a singleton object used to represent null values in collection objects (which don’t allow nil values)." ...
Ruby send vs __send__
...th objects of any class, you need to use __send__ to be on the safe side.
Now that leaves the question, why there is send and not just __send__. If there were only __send__ the name send could be used by other classes without any confusion. The reason for that is that send existed first and only la...