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Use of “instanceof” in Java [duplicate]
...ied type.
Example :
public class MainClass {
public static void main(String[] a) {
String s = "Hello";
int i = 0;
String g;
if (s instanceof java.lang.String) {
// This is going to be printed
System.out.println("s is a String");
}
if (i instanceof Integer...
How to parse float with two decimal places in javascript?
...
You can use toFixed() to do that
var twoPlacedFloat = parseFloat(yourString).toFixed(2)
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How to initialize an array in one step using Ruby?
...ot required, but included for clarity
For arrays of whitespace-delimited strings, you can use Percent String syntax:
array = %w[ 1 2 3 ]
You can also pass a block to Array.new to determine what the value for each entry will be:
array = Array.new(3) { |i| (i+1).to_s }
Finally, although it doe...
How do arrays in C# partially implement IList?
...ot covariant (and can't be safely), array covariance allows this to work:
string[] strings = { "a", "b", "c" };
IList<object> objects = strings;
... which makes it look like typeof(string[]) implements IList<object>, when it doesn't really.
The CLI spec (ECMA-335) partition 1, sectio...
How can I parse a JSON file with PHP? [duplicate]
... ' : ', $v;
}
To echo the statuses of each person, try this:
<?php
$string = file_get_contents("/home/michael/test.json");
if ($string === false) {
// deal with error...
}
$json_a = json_decode($string, true);
if ($json_a === null) {
// deal with error...
}
foreach ($json_a as $pers...
Running Bash commands in Python
...
It's better use shlex.split() instead string.split() in this case
– Alexey Sviridov
May 24 '18 at 3:51
4
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Spring Test & Security: How to mock authentication?
...ller {
@Secured("ROLE_MANAGER")
@GetMapping("/salute")
public String saluteYourManager(@AuthenticationPrincipal User activeUser)
{
return String.format("Hi %s. Foo salutes you!", activeUser.getUsername());
}
}
Here we have a get mapped function to the route /foo/salute ...
Properties order in Margin
If I have such string in XAML:
4 Answers
4
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Naming convention - underscore in C++ and C# variables
... wayside with the advent of automatic properties though.
Before:
private string _name;
public string Name
{
get { return this._name; }
set { this._name = value; }
}
After:
public string Name { get; set; }
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How to pass a single object[] to a params object[]
...
This is a one line solution involving LINQ.
var elements = new String[] { "1", "2", "3" };
Foo(elements.Cast<object>().ToArray())
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