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Why do we need private subnet in VPC?
...outbound access to the Internet. This is where Network Address Translation² and a NAT instance come in.
The machines on a private subnet can access the Internet because the default route on a private subnet is not the VPC "Internet Gateway" object -- it is an EC2 instance configured as a NAT in...
Get generic type of java.util.List
...ed Jan 31 '17 at 21:45
Jean-François Savard
19.1k55 gold badges4040 silver badges6666 bronze badges
answered Dec 21 '09 at 21:18
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C# short/long/int literal format?
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var d = 1.0d; // double
var d0 = 1.0; // double
var d1 = 1e+3; // double
var d2 = 1e-3; // double
var f = 1.0f; // float
var m = 1.0m; // decimal
var i = 1; // int
var ui = 1U; // uint
var ul = 1UL; // ulong
var l ...
What's the equivalent of Java's Thread.sleep() in Objective-C/Cocoa?
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Sleeping for one second in Objective C:
[NSThread sleepForTimeInterval:1.0f];
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Android and setting alpha for (image) view alpha
...(float) whose XML counterpart is android:alpha. It takes a range of 0.0 to 1.0 instead of 0 to 255. Use it e.g. like
<ImageView android:alpha="0.4">
However, the latter in available only since API level 11.
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How to find the type of an object in Go?
... "reflect"
)
func main() {
b := true
s := ""
n := 1
f := 1.0
a := []string{"foo", "bar", "baz"}
fmt.Println(reflect.TypeOf(b))
fmt.Println(reflect.TypeOf(s))
fmt.Println(reflect.TypeOf(n))
fmt.Println(reflect.TypeOf(f))
fmt.Println(reflect.TypeOf(a))
}
Pr...
How to make an Android device vibrate?
...el 26. Use vibrate(VibrationEffect) instead.
– Timo Bähr
Jan 23 '18 at 15:05
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String formatting: % vs. .format vs. string literal
...ed Feb 13 '17 at 15:51
Jean-François Corbett
33.6k2525 gold badges124124 silver badges172172 bronze badges
answered Aug 1 '11 at 3:01
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Where does this come from: -*- coding: utf-8 -*-
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actually, if I put a line like test1 = 'äöü' it will hint you to add such a headder to the file. (pycharm 2019.1)
– Cutton Eye
Sep 27 '19 at 10:33
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Why is React's concept of Virtual DOM said to be more performant than dirty model checking?
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Here's a comment by React team member Sebastian Markbåge which sheds some light:
React does the diffing on the output (which is a known serializable format, DOM attributes). This means that the source data can be of any format. It can be immutable data structures and state in...