LINQ Find String Duplicates in List
I am trying to prevent name duplicates in a List, but with no luck so far.
I have a list of entries and each entry has a name (e.g. entries: "file", "file1", "someFile", "anotherFile"). Whenever I create new entry I add it to the entry List. But I don't want to add new entry with the same name.
I have a file that I just created (e.g. name: "file").
How do I find all name duplicates and make it something like this at the end: "file2"?
Sorry if the question is a bit vague.
I tried to use LINQ and Regex, but I'm kind of new to those things so not sure what I'm doing..
regex string linq filter duplicates
asked Nov 29 '18 at 0:00
UnknownUserUnknownUser
427
add a comment |
I am trying to prevent name duplicates in a List, but with no luck so far.
I have a list of entries and each entry has a name (e.g. entries: "file", "file1", "someFile", "anotherFile"). Whenever I create new entry I add it to the entry List. But I don't want to add new entry with the same name.
I have a file that I just created (e.g. name: "file").
How do I find all name duplicates and make it something like this at the end: "file2"?
Sorry if the question is a bit vague.
I tried to use LINQ and Regex, but I'm kind of new to those things so not sure what I'm doing..
regex string linq filter duplicates
asked Nov 29 '18 at 0:00
UnknownUserUnknownUser
427
1
You need to at least show some code of what you tried... considerList<string>.Contains.
– NetMage
Nov 29 '18 at 0:07
I don't have much to show I just looked around the net about LINQ and Regex, but nothing I tried did the trick, so at the end I just have a bunch of messy and nonsensical code..
– UnknownUser
Nov 29 '18 at 0:11
Add in the question whatever you have tried to give us the clue. thanks
– Usman
Nov 29 '18 at 0:50
add a comment |
I am trying to prevent name duplicates in a List, but with no luck so far.
I have a list of entries and each entry has a name (e.g. entries: "file", "file1", "someFile", "anotherFile"). Whenever I create new entry I add it to the entry List. But I don't want to add new entry with the same name.
I have a file that I just created (e.g. name: "file").
How do I find all name duplicates and make it something like this at the end: "file2"?
Sorry if the question is a bit vague.
I tried to use LINQ and Regex, but I'm kind of new to those things so not sure what I'm doing..
regex string linq filter duplicates
asked Nov 29 '18 at 0:00
UnknownUserUnknownUser
427
I am trying to prevent name duplicates in a List, but with no luck so far.
I have a list of entries and each entry has a name (e.g. entries: "file", "file1", "someFile", "anotherFile"). Whenever I create new entry I add it to the entry List. But I don't want to add new entry with the same name.
I have a file that I just created (e.g. name: "file").
How do I find all name duplicates and make it something like this at the end: "file2"?
Sorry if the question is a bit vague.
I tried to use LINQ and Regex, but I'm kind of new to those things so not sure what I'm doing..
regex string linq filter duplicates
regex string linq filter duplicates
asked Nov 29 '18 at 0:00
UnknownUserUnknownUser
427
asked Nov 29 '18 at 0:00
UnknownUserUnknownUser
427
edited Nov 29 '18 at 0:06
UnknownUser
asked Nov 29 '18 at 0:00
UnknownUserUnknownUser
427
asked Nov 29 '18 at 0:00
UnknownUserUnknownUser
427
asked Nov 29 '18 at 0:00
UnknownUserUnknownUser
427
427
1
You need to at least show some code of what you tried... considerList<string>.Contains.
– NetMage
Nov 29 '18 at 0:07
I don't have much to show I just looked around the net about LINQ and Regex, but nothing I tried did the trick, so at the end I just have a bunch of messy and nonsensical code..
– UnknownUser
Nov 29 '18 at 0:11
Add in the question whatever you have tried to give us the clue. thanks
– Usman
Nov 29 '18 at 0:50
add a comment |
1
You need to at least show some code of what you tried... considerList<string>.Contains.
– NetMage
Nov 29 '18 at 0:07
I don't have much to show I just looked around the net about LINQ and Regex, but nothing I tried did the trick, so at the end I just have a bunch of messy and nonsensical code..
– UnknownUser
Nov 29 '18 at 0:11
Add in the question whatever you have tried to give us the clue. thanks
– Usman
Nov 29 '18 at 0:50
1
1
You need to at least show some code of what you tried... consider
List<string>.Contains.– NetMage
Nov 29 '18 at 0:07
You need to at least show some code of what you tried... consider
List<string>.Contains.– NetMage
Nov 29 '18 at 0:07
I don't have much to show I just looked around the net about LINQ and Regex, but nothing I tried did the trick, so at the end I just have a bunch of messy and nonsensical code..
– UnknownUser
Nov 29 '18 at 0:11
I don't have much to show I just looked around the net about LINQ and Regex, but nothing I tried did the trick, so at the end I just have a bunch of messy and nonsensical code..
– UnknownUser
Nov 29 '18 at 0:11
Add in the question whatever you have tried to give us the clue. thanks
– Usman
Nov 29 '18 at 0:50
Add in the question whatever you have tried to give us the clue. thanks
– Usman
Nov 29 '18 at 0:50
add a comment |
1 Answer
1
active
oldest
votes
According to what you have posted in question a simple program with if-else conditions could solve your problem:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static void Main()
{
string entries = new {"file", "file1", "someFile", "anotherFile", "file", "someFile", "file"};
List<string> curatedEntries = new List<string>();
foreach(string e in entries)
{
int index = 0;
string entry = e;
Check:
if(CheckExists(curatedEntries, entry)){
index++;
entry = e + index;
goto Check;
}
curatedEntries.Add(entry);
}
curatedEntries.ForEach(x=>Console.WriteLine(x));
}
public static bool CheckExists(List<string> lst,string e)
{
return lst.Any(x=>x.Equals(e));
}
}
Here's fiddle: https://dotnetfiddle.net/fdSClH
answered Dec 4 '18 at 6:54
Nitin SawantNitin Sawant
3,89463875
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53529943%2flinq-find-string-duplicates-in-list%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
According to what you have posted in question a simple program with if-else conditions could solve your problem:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static void Main()
{
string entries = new {"file", "file1", "someFile", "anotherFile", "file", "someFile", "file"};
List<string> curatedEntries = new List<string>();
foreach(string e in entries)
{
int index = 0;
string entry = e;
Check:
if(CheckExists(curatedEntries, entry)){
index++;
entry = e + index;
goto Check;
}
curatedEntries.Add(entry);
}
curatedEntries.ForEach(x=>Console.WriteLine(x));
}
public static bool CheckExists(List<string> lst,string e)
{
return lst.Any(x=>x.Equals(e));
}
}
Here's fiddle: https://dotnetfiddle.net/fdSClH
answered Dec 4 '18 at 6:54
Nitin SawantNitin Sawant
3,89463875
add a comment |
According to what you have posted in question a simple program with if-else conditions could solve your problem:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static void Main()
{
string entries = new {"file", "file1", "someFile", "anotherFile", "file", "someFile", "file"};
List<string> curatedEntries = new List<string>();
foreach(string e in entries)
{
int index = 0;
string entry = e;
Check:
if(CheckExists(curatedEntries, entry)){
index++;
entry = e + index;
goto Check;
}
curatedEntries.Add(entry);
}
curatedEntries.ForEach(x=>Console.WriteLine(x));
}
public static bool CheckExists(List<string> lst,string e)
{
return lst.Any(x=>x.Equals(e));
}
}
Here's fiddle: https://dotnetfiddle.net/fdSClH
answered Dec 4 '18 at 6:54
Nitin SawantNitin Sawant
3,89463875
add a comment |
According to what you have posted in question a simple program with if-else conditions could solve your problem:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static void Main()
{
string entries = new {"file", "file1", "someFile", "anotherFile", "file", "someFile", "file"};
List<string> curatedEntries = new List<string>();
foreach(string e in entries)
{
int index = 0;
string entry = e;
Check:
if(CheckExists(curatedEntries, entry)){
index++;
entry = e + index;
goto Check;
}
curatedEntries.Add(entry);
}
curatedEntries.ForEach(x=>Console.WriteLine(x));
}
public static bool CheckExists(List<string> lst,string e)
{
return lst.Any(x=>x.Equals(e));
}
}
Here's fiddle: https://dotnetfiddle.net/fdSClH
answered Dec 4 '18 at 6:54
Nitin SawantNitin Sawant
3,89463875
According to what you have posted in question a simple program with if-else conditions could solve your problem:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static void Main()
{
string entries = new {"file", "file1", "someFile", "anotherFile", "file", "someFile", "file"};
List<string> curatedEntries = new List<string>();
foreach(string e in entries)
{
int index = 0;
string entry = e;
Check:
if(CheckExists(curatedEntries, entry)){
index++;
entry = e + index;
goto Check;
}
curatedEntries.Add(entry);
}
curatedEntries.ForEach(x=>Console.WriteLine(x));
}
public static bool CheckExists(List<string> lst,string e)
{
return lst.Any(x=>x.Equals(e));
}
}
Here's fiddle: https://dotnetfiddle.net/fdSClH
answered Dec 4 '18 at 6:54
Nitin SawantNitin Sawant
3,89463875
answered Dec 4 '18 at 6:54
Nitin SawantNitin Sawant
3,89463875
answered Dec 4 '18 at 6:54
Nitin SawantNitin Sawant
3,89463875
answered Dec 4 '18 at 6:54
Nitin SawantNitin Sawant
3,89463875
3,89463875
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53529943%2flinq-find-string-duplicates-in-list%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
You need to at least show some code of what you tried... consider
List<string>.Contains.– NetMage
Nov 29 '18 at 0:07
I don't have much to show I just looked around the net about LINQ and Regex, but nothing I tried did the trick, so at the end I just have a bunch of messy and nonsensical code..
– UnknownUser
Nov 29 '18 at 0:11
Add in the question whatever you have tried to give us the clue. thanks
– Usman
Nov 29 '18 at 0:50