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How should one use std::optional?
...I should use it or how I should use it.
Consider when you are writing an API and you want to express that "not having a return" value is not an error. For example, you need to read data from a socket, and when a data block is complete, you parse it and return it:
class YourBlock { /* block header...
How do I format a number in Java?
...mat() will be new best friends!
https://docs.oracle.com/javase/1.5.0/docs/api/java/util/Formatter.html#syntax
String.format("%.2f", (double)value);
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jQuery DataTables: control table width
...ed.
The method to get around this is to call the fnAdjustColumnSizing API
function. This function will calculate the column widths that are
needed based on the current data and then redraw the table - which is
exactly what is needed when the table becomes visible for the first
time. For...
Where is body in a nodejs http.get response?
I'm reading the docs at http://nodejs.org/docs/v0.4.0/api/http.html#http.request , but for some reason, I can't seem to to actually find the body/data attribute on the returned, finished response object.
...
Remote debugging with Android emulator
...e started from Emirikol's solution and refined it, as with the new Android API > 21 the emulator was appearing offline and I had to go to Genymotion settings and leave Android SDK path empty.
And from command line:
netsh interface portproxy add v4tov4 listenport=5555 connectport=5555 connectaddr...
Resize UIImage by keeping Aspect ratio and width
...eight, based on answer by @János
Uses the modern UIGraphicsImageRenderer API, so a valid UIImage is guaranteed to return.
extension UIImage
{
/// Given a required height, returns a (rasterised) copy
/// of the image, aspect-fitted to that height.
func aspectFittedToHeight(_ newHeight...
Hand Coded GUI Versus Qt Designer GUI [closed]
...ave time and learn less with a designer, since you don't need to learn the APIs you use. But "learn less" is the key factor, so in both cases I'd say Hand Coded GUI.
2) Menu bars are quite annoying to write code for. Also, think to details like accelerators and so on. Still, it depends on what you'...
Why is Java Vector (and Stack) class considered obsolete or deprecated?
...ence between ArrayList and Vector, but you should use ArrayList.
From the API doc.
As of the Java 2 platform v1.2, this
class was retrofitted to implement the
List interface, making it a member of
the Java Collections Framework. Unlike
the new collection implementations,
Vector is syn...
How do you fade in/out a background color using jquery?
... message) is implemented in the jQuery UI as the highlight effect
https://api.jqueryui.com/highlight-effect/
Color and duration are variable
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Swing vs JavaFx for desktop applications [closed]
...er and easier to maintain?
All things being equal, probably JavaFX - the API is much more consistent across components. However, this depends much more on how the code is written rather than what library is used to write it.
And what will be faster to build from scratch?
Highly dependent on ...