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C++ convert hex string to signed integer
... << std::hex << "fffefffe";
ss >> x;
the following example produces -65538 as its result:
#include <sstream>
#include <iostream>
int main() {
unsigned int x;
std::stringstream ss;
ss << std::hex << "fffefffe";
ss >> x;
// out...
jQuery using append with effects
How can I use .append() with effects like show('slow')
10 Answers
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What is the difference between id and class in CSS, and when should I use them? [duplicate]
Here I gave an id to the div element and it's applying the relevant CSS for it.
15 Answers
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Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but
...ence between these initializations?
char a[] = "string literal";
char *p = "string literal";
My program crashes if I try to assign a new value to p[i].
A: A string literal (the formal term
for a double-quoted string in C
source) can be used in two slightly
different ways:
A...
.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?
...
Counterintuitively, the fastest version, on Hotspot 8, is:
MyClass[] arr = myList.toArray(new MyClass[0]);
I have run a micro benchmark using jmh the results and code are below, showing that the version with an empty array consistently outperforms the version with a pre...
“User interaction is not allowed” trying to sign an OSX app using codesign
...
I too have been fighting this. Nothing helped until I tried the suggestion on http://devnet.jetbrains.com/thread/311971. Thanks ashish agrawal!
Login your build user via the GUI and open Keychain Access. Select your signing private key, right-click, choose Get Inf...
Is std::unique_ptr required to know the full definition of T?
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Adopted from here.
Most templates in the C++ standard library require that they be instantiated with complete types. However shared_ptr and unique_ptr are partial exceptions. Some, but not all of their members can be instantiat...
How to create nonexistent subdirectories recursively using Bash?
I am creating a quick backup script that will dump some databases into a nice/neat directory structure and I realized that I need to test to make sure that the directories exist before I create them. The code I have works, but it seems that there is a better way to do it. Any suggestions?
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Exposing a port on a live Docker container
...container that acts like a full-on virtual machine. I know I can use the EXPOSE instruction inside a Dockerfile to expose a port, and I can use the -p flag with docker run to assign ports, but once a container is actually running, is there a command to open/map additional ports live?
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strdup() - what does it do in C?
What is the purpose of the strdup() function in C?
10 Answers
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