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Extracting numbers from vectors of strings
...ion is an indirect way of getting to the solution. If you want to retrieve all the numbers, I recommend gregexpr:
matches <- regmatches(years, gregexpr("[[:digit:]]+", years))
as.numeric(unlist(matches))
If you have multiple matches in a string, this will get all of them. If you're only intere...
'Missing contentDescription attribute on image' in XML
...heir devices more easily, including text-to-speech,
haptic feedback, trackball and D-pad navigation that augments their
experience. Android application developers can take advantage of these
services to make their applications more accessible and also build
their own accessibility services.
This gu...
onchange event on input type=range is not triggering in firefox while dragging
... Just note that with this solution, in chrome you will get two calls to the handler (one per event), so if you care for that, then you need to guard against it.
– Jaime
Mar 24 '14 at 17:46
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Bootstrap 3 Navbar with Logo
...ood code sample. A key requirement other than having acceptable display on all screen sizes is the menu collapsibility on smaller screens.
...
Remove unnecessary svn:mergeinfo properties
...nts to add/change a lot of svn:mergeinfo properties to files that are totally unrelated to the things that I want to merge.
...
How is the 'use strict' statement interpreted in Node.js? [duplicate]
...
"use strict";
Basically it enables the strict mode.
Strict Mode is a feature that allows you to place a program, or a function, in a "strict" operating context. In strict operating context, the method form binds this to the objects as befor...
std::function vs template
...buggy program to your customer.
Moreover, as you correctly pointed out, calls to template functions are resolved statically (i.e. at compile time), so the compiler has all the necessary information to optimize and possibly inline the code (which would not be possible if the call were performed thr...
“To Do” list before publishing Android app to market [closed]
...advice:
Launch your app at the end of the week (Thursday afternoon is usually a good time). Why so? Well, no companies would like to publish an app only 1.5 day before the week end -> too dangerous (in case there is a problem that needs a quick reaction time).
Use proguard on your app (usually,...
What is the difference between a definition and a declaration?
...// extern can be omitted for function declarations
class foo; // no extern allowed for type declarations
A definition actually instantiates/implements this identifier. It's what the linker needs in order to link references to those entities. These are definitions corresponding to the above declara...
What's causing my java.net.SocketException: Connection reset? [duplicate]
...in our logs. We are unsure as to where the Connection reset error is actually coming from, and how to go about debugging.
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