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How can I remove a flag in C?
...itwise NOT inverts every bit (i.e. 0 => 1, 1 => 0).
flags = flags & ~MASK; or flags &= ~MASK;.
Long Answer
ENABLE_WALK = 0 // 00000000
ENABLE_RUN = 1 // 00000001
ENABLE_SHOOT = 2 // 00000010
ENABLE_SHOOTRUN = 3 // 00000011
value = ENABLE_RUN // 00000001
value |= E...
Join strings with a delimiter only if strings are not null or empty
... definition of "empty" is different, then you'll have to provide it, for example:
[...].filter(x => typeof x === 'string' && x.length > 0)
will only keep non-empty strings in the list.
--
(obsolete jquery answer)
var address = "foo";
var city;
var state = "bar";
var zip;
text =...
What is the difference between concurrent programming and parallel programming?
...thing that helped me to understand that difference. Could you give me an example for both?
18 Answers
...
How do I use Ruby for shell scripting?
...dard err instead of standard out. Use this advice
out = `git status 2>&1`
Backticks do string interpolation:
blah = 'lib'
`touch #{blah}`
You can pipe inside Ruby, too. It's a link to my blog, but it links back here so it's okay :) There are probably more advanced things out there on this...
How to concatenate multiple lines of output to one line?
...
| tr '\n' ' ' was not working for me when called through php exec function. It was ignoring tr, and just giving last match from grep. | xargs worked.
– Adarsha
Mar 26 '15 at 17:07
...
In Eclipse, what can cause Package Explorer “red-x” error-icon when all Java sources compile without
...ifically get it when another non-Java component fails validation (a good example would be an XML file, like spring's or maven's).
– Spencer Kormos
Oct 22 '08 at 17:26
2
...
Insert HTML with React Variable Statements (JSX)
...00% sure the HTML you are rendering is XSS (cross-site scripting) safe.
Example:
import DOMPurify from 'dompurify'
const thisIsMyCopy = '<p>copy copy copy <strong>strong copy</strong></p>';
render: function() {
return (
<div className="content" dangerously...
How can I tell jackson to ignore a property for which I don't have control over the source code?
... my entities has a GeometryCollection that throws an exception when you call "getBoundary" (the why of this is another book, for now let's say this is the way it works).
...
Overloading Macro on Number of Arguments
...a) + (b) + (c) + (d))
// ...
PS: __NARG__ is copied from Laurent Deniau & Roland Illig here: https://groups.google.com/group/comp.std.c/browse_thread/thread/77ee8c8f92e4a3fb/346fc464319b1ee5?pli=1
share
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...
How to get current time and date in C++?
...
In C++ 11 you can use std::chrono::system_clock::now()
Example (copied from en.cppreference.com):
#include <iostream>
#include <chrono>
#include <ctime>
int main()
{
auto start = std::chrono::system_clock::now();
// Some computation here
auto end...