Questions tagged [lastindexof]
125 questions
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How do I find the index in a string of where my nth occurrence of a regex ends?
Using Rails 5.0.1 with Ruby 2.4. How do I find the index in a string of where the nth occurrence of a regex ends? If my regex were
/\-/
and my string where
str = "a -b -c"
and I were looking for the last index of the second occurrence of my…
Dave
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Substring IP-Address with adding a string generates error but works
I have following command:
$IP_start = $First.Substring(0, $First.LastIndexOf('.'))+ ".200"
$First is an IP-Address, for example 192.168.0.1
I want to change the 1 in the fourth octect into a 200.
Write-Output $IP_start
gives me the correct…
mr.kanister
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How to find index of whole word in string in java
I want to find out all starting indexes of whole word in a given string.
Lets say I have a string given below.
"an ancient manuscripts, another means to divide sentences into
paragraphs was a line break (newline) followed by an initial at the
…
Ravi Godara
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getLastIndexOf(int item) LinkedList
I'm currently a freshman comp sci student working on learning data structures both through my class and also online.
I'm new to stack too but it has helped me a lot in the past.
My current problem is searching through a LinkedList to return the last…
Pansock
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Using regexp to filter an array
I'm trying to use a RegExp in a .filter() method, the problem is that I am using /g on the regexp, so after the first iteration, the .lasindex is not longer 0 and I am getting false as result. Is there any way to reset the .lastindex during next…
Jorge Urosa
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Extract correct combination of digits from string
I am working on a method which extracts the correct version number from a String (for later comparisation if there is a new version).
The String which is being provided unfortunatly has no fixed pattern and can have multiple combinations of…
Simon
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return substring within an array
I found a good solution but not exactly for my problem:
String s = "abc.def.ghfj.qert";
s.substring(s.lastIndexOf(".") + 1)
Source:
Java: Getting a substring from a string starting after a particular character
This I have to use it within an…
PegasusTT77
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Swapping and Changing scripts
Hello my task is to swap the first and last words and capitalize the first letter of the first word
Say i input
one two three four
My output turns out to be
fourTwo three fourone
Here is my code
I am a beginner so please be easy
import…
Beginner
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- 1
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Qt QString lastIndexOf not working
I'm using Qt5.6, I'm trying to use the QString function lastIndexOf. The subject data contains something like:
156 + (28 * 4) + (14 * 9 * 2)
Using indexOf:
int intOpB = strLocalCopy.indexOf(ucOpenBracket);
strLocalCopy contains the…
SPlatten
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Substr starting at one character OR one other character
I have a function that takes an argument and needs to return that argument as a substring of it's original string:
var $ = function (selector) {
var elements = [];
var selectorSubstr = selector.substr(selector.lastIndexOf(".") ||…
Joe
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Why does MEAN js unique error handler search for '.$'
MEAN js has an error handler for mongo unique error. Here's the code:
var getUniqueErrorMessage = function(err) {
var output;
try {
var fieldName = err.err.substring(err.err.lastIndexOf('.$') + 2, err.err.lastIndexOf('_1'));
…
Dushyant Bangal
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c# lastindexof throwing an exception
I am unsure why this is throwing an exception. This code is supposed to take the cursor position then get the last index of space or enter to pick out a the last single word typed.It sometimes throws an exception of out of range. Is the selection…
Peter S McIntyre
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vb.net string.split vs substring.lastindexof - which is faster or 'better'
I have a loop that reads through a lot of strings, each string containing information split by a char (¥).
For this loop, i only really need the end value, which i know the index of. I am wondering if it is better to use string.split, or to use…
user2366092
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c# break string into arrays to print on different lines with zebra printer
I am using a zebra card printer. I'm working with a group to design a program that will allow a user to input their desired information into different boxes and print out accordingly, however there's a place in the form that allows administrative…
user5360843
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0 answers
Doubly LinkedLists type Generic, can't get lastIndexOf() method to work
Ran into a slight problem of where for my DoublyLinkedList's lastIndexOf(E element) only returns -1. My code for indexOf(E element) works correctly though.
I'm using my DoublyLinkedListIterator to do the finding. The code for that is currently:…
ProjectDefy
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