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Group a list of objects by an attribute : Java
...gt;> studlistGrouped =
studlist.stream().collect(Collectors.groupingBy(w -> w.stud_location));
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How do I change the root directory of an apache server? [closed]
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If you prefer a graphical text editor, you can just replace the sudo nano by a gksu gedit.
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Proper MIME media type for PDF files
... referenced from the MIME Media Types registry.
MIME types are controlled by a standards body, The Internet Assigned Numbers Authority (IANA). This is the same organization that manages the root name servers and the IP address space.
The use of x-pdf predates the standardization of the MIME type f...
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 = '';
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App Inventor 2 扩展 · App Inventor 2 中文网
... and the App Inventor development team adds new capabilities to the system by implementing new components.
There have been many requests to include additional features in App Inventor. Some of these are special-purpose features that would have only a few users, where it would be undesirable to in...
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?
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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...
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 ...
How to see top processes sorted by actual memory usage?
...rocesses that are eating all your memory; in top use the M command to sort by memory use. Feel free to ignore the VIRT column, that just tells you how much virtual memory has been allocated, not how much memory the process is using. RES reports how much memory is resident, or currently in ram (as op...