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What is the meaning of the term “thread-safe”?
...ode is thread-safe if it functions correctly during simultaneous execution by multiple threads. In particular, it must satisfy the need for multiple threads to access the same shared data, and the need for a shared piece of data to be accessed by only one thread at any given time.
There are a f...
Rolling back local and remote git repository by 1 commit
...ange its HEAD reference even though it is a bare repo)
Note, as commented by alien-technology in the comments below, on Windows (CMD session), you would need ^^:
git reset --hard HEAD^^
git push -f
Update since 2011:
Using git push --force-with-lease (that I present here, introduced in 2013 wit...
Group a list of objects by an attribute : Java
...gt;> studlistGrouped =
studlist.stream().collect(Collectors.groupingBy(w -> w.stud_location));
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Crash logs generated by iPhone Simulator?
Are there any crash logs generated by iPhone Simulator?
6 Answers
6
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Facebook Callback appends '#_=_' to Return URL
...ndow.location.pathname);
} else {
// Prevent scrolling by storing the page's current scroll offset
var scroll = {
top: document.body.scrollTop,
left: document.body.scrollLeft
};
window.location.hash = '';
...
What's the difference between a Future and a Promise?
...not your fault Assylias, but that javadoc extract needs a serious workover by a decent tech author. On my fifth read-through I can just start to appreciate what it's trying to say ... and I come to this with an understanding of futures and promises already in place!
– Beetroot-...
What is a Windows Handle?
...
A HANDLE is a context-specific unique identifier. By context-specific, I mean that a handle obtained from one context cannot necessarily be used in any other aribtrary context that also works on HANDLEs.
For example, GetModuleHandle returns a unique identifier to a currentl...
How to sort an array by a date property
... 1 : 0;
});
Generic, Powerful Answer
Define a custom non-enumerable sortBy function using a Schwartzian transform on all arrays :
(function(){
if (typeof Object.defineProperty === 'function'){
try{Object.defineProperty(Array.prototype,'sortBy',{value:sb}); }catch(e){}
}
if (!Array.prot...
Is pass-by-value a reasonable default in C++11?
In traditional C++, passing by value into functions and methods is slow for large objects, and is generally frowned upon. Instead, C++ programmers tend to pass references around, which is faster, but which introduces all sorts of complicated questions around ownership and especially around memory ma...
How to set std::tuple element by index?
One can get an element from std::tuple by index using std::get .
Analogically, how to set tuple's element by index?
2 ...