How to Replace Certain Parts of My String

How do I replace certain parts of my string?

strtr ($str, array ('a' => '<replacement>'));

Or to answer your question more precisely:

strtr ("Hello, my name is Santa", array ('a' => '<replacement>'));

Replace part of a string in Python?

>>> stuff = "Big and small"
>>> stuff.replace(" and ","/")
'Big/small'

How to replace certain parts of a string using a list?

Strings are immutable in python, so replacements don't modify the string, only return a modified string. You should reassign the string:

for name in namelist:
    e_text = e_text.replace(name, "replaced")

You don't need the if name in e_text check since replace already does nothing if it's not found.

Javascript replace some parts of string

A RegExp might be good. Regex Editor.

Leaving the first two letters and replacing the rest before the @ to be replaced

let str = 'hideparts@email.com';

console.log(str.replace(/(\w{2}).*?@/, '$1****@'));

How do I replace part of a string in PHP?

Simply use str_replace:

$text = str_replace(' ', '_', $text);

You would do this after your previous substr and strtolower calls, like so:

$text = substr($text,0,10);
$text = strtolower($text);
$text = str_replace(' ', '_', $text);

If you want to get fancy, though, you can do it in one line:

$text = strtolower(str_replace(' ', '_', substr($text, 0, 10)));

How to replace part of a String in Java?

Use regex like this :

public static void main(String[] args) {
    String s = "Hello my Dg6Us9k. I am alive";
    String newString=s.replaceFirst("\\smy\\s\\w{7}", "");
    System.out.println(newString);
}

O/P :
Hello. I am alive

Android - how to replace part of a string by another string?

It is working, but it wont modify the caller object, but returning a new String.

So you just need to assign it to a new String variable, or to itself:

string = string.replace("to", "xyz");

String newString = string.replace("to", "xyz");

API Docs

public String replace (CharSequence target, CharSequence replacement)

Since: API Level 1

Copies this string replacing
occurrences of the specified target
sequence with another sequence. The
string is processed from the beginning
to the end.

Parameters

target the sequence to replace.
replacement the replacement
sequence.

Returns the resulting string.

Throws NullPointerException if target or replacement is null.

How do I replace part of a string in C#?

Why use regex when you can do:

string newstr = str.Replace("tag", "newtag");

string newstr = str.Replace("<tag>","<newtag>").Replace("</tag>","</newtag>");

Edited to @RaYell's comment

How to replace part of a string using regex

You may use a regex that will match the first [....] followed with [ and capture that part into a group (that you will be able to refer to via a backreference), and then match 1+ chars other than ] to replace them with your replacement:

var str = "asd[595442/A][30327][0]";var strToReplace = "30333";console.log(str.replace(/(\[[^\]]*]\[)[^\]]*/, "$1" + strToReplace));
var strDesiredResult = "asd[595442/A][30333][0]";console.log(strDesiredResult);