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What exactly is Type Coercion in Javascript?
...ram? There’s nothing preventing the programmer from typing {} + {} or “hello” + 5 in a program even if the language doesn’t think those expressions make any sense.
What ultimately happens in those situations depends on how strict the language is about its type rules.
A languages type syst...
Java: possible to line break in a properties file?
...oss multiple lines, and whitespace that starts a line is ignored:
myStr = Hello \
World
The Java docs put it this way:
A logical line holds all the data of a key-element pair, which may be spread out across several adjacent natural lines by escaping the line terminator sequence with a...
Can I convert a C# string value to an escaped string literal
... return writer.ToString();
}
}
}
This code:
var input = "\tHello\r\n\tWorld!";
Console.WriteLine(input);
Console.WriteLine(ToLiteral(input));
Produces:
Hello
World!
"\tHello\r\n\tWorld!"
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Adding multiple class using ng-class
...:
<div ng-class="{class1 : expression1, class2 : expression2}">
Hello World!
</div>
To apply multiple classes when an expression holds true:
<!-- notice expression1 used twice -->
<div ng-class="{class1 : expression1, class2 : expression1}">
Hello World!
</div&...
Update MongoDB field using value of another field
...g the update/creation of a field based on another field:
// { firstName: "Hello", lastName: "World" }
db.collection.update(
{},
[{ $set: { name: { $concat: [ "$firstName", " ", "$lastName" ] } } }],
{ multi: true }
)
// { "firstName" : "Hello", "lastName" : "World", "name" : "Hello World" }
...
Convert all first letter to upper case, rest lower for each word
...first letter of the entire string. Therefore, this solution would convert "hello world" to "Hello world", rather than "Hello World".
– brsfan
Feb 28 '17 at 18:11
add a comment...
Remove a fixed prefix/suffix from a string in Bash
...
$ string="hello-world"
$ prefix="hell"
$ suffix="ld"
$ #remove "hell" from "hello-world" if "hell" is found at the beginning.
$ prefix_removed_string=${string/#$prefix}
$ #remove "ld" from "o-world" if "ld" is found at the end.
$ suf...
Case insensitive regex in JavaScript
...laceWith) {
return str.replace(regex, replaceWith);
}
replaceWithRegex('HEllo there', /[aeiou]/gi, 'X'); //"HXllX thXrX"
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How do I syntax check a Bash script without running it?
...r bash script tries to execute a command that isn't in your path, like ech hello instead of echo hello.
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How is an overloaded method chosen when a parameter is the literal null value?
...and it :
class A{
public void methodA(){
System.out.println("Hello methodA");
}
}
class B extends A{
public void methodB(){
System.out.println("Hello methodB");
}
}
class C{
public void methodC(){
System.out.println("Hello methodC");
}
}
public cl...