How to check if a string contains an element from a list
What is the best way to check if a string contains an element from a list?
for example:
String email= 'itairu@gmail.com'
List<String> domainNames = split by ; from domains in a custom setting
for example : (domainNames = [0] - gmail.com, [1] - example.com, [2] - mof.com);
How can I check if email field is contains one of the values in the domainName's List?
I can do it with a Boolean field that will be turned to true if one of field is found for this case -
boolean found = false;
for(String s : domainNames ){
if(email.contains(s)){
found =true;
}
}
I want to know if there is a better way - in case I will have a huge amount of values to move on in the for loop for this.
Thanks!
apex string contains
asked Dec 9 at 13:57
Salvation
656
add a comment |
What is the best way to check if a string contains an element from a list?
for example:
String email= 'itairu@gmail.com'
List<String> domainNames = split by ; from domains in a custom setting
for example : (domainNames = [0] - gmail.com, [1] - example.com, [2] - mof.com);
How can I check if email field is contains one of the values in the domainName's List?
I can do it with a Boolean field that will be turned to true if one of field is found for this case -
boolean found = false;
for(String s : domainNames ){
if(email.contains(s)){
found =true;
}
}
I want to know if there is a better way - in case I will have a huge amount of values to move on in the for loop for this.
Thanks!
apex string contains
asked Dec 9 at 13:57
Salvation
656
add a comment |
What is the best way to check if a string contains an element from a list?
for example:
String email= 'itairu@gmail.com'
List<String> domainNames = split by ; from domains in a custom setting
for example : (domainNames = [0] - gmail.com, [1] - example.com, [2] - mof.com);
How can I check if email field is contains one of the values in the domainName's List?
I can do it with a Boolean field that will be turned to true if one of field is found for this case -
boolean found = false;
for(String s : domainNames ){
if(email.contains(s)){
found =true;
}
}
I want to know if there is a better way - in case I will have a huge amount of values to move on in the for loop for this.
Thanks!
apex string contains
asked Dec 9 at 13:57
Salvation
656
What is the best way to check if a string contains an element from a list?
for example:
String email= 'itairu@gmail.com'
List<String> domainNames = split by ; from domains in a custom setting
for example : (domainNames = [0] - gmail.com, [1] - example.com, [2] - mof.com);
How can I check if email field is contains one of the values in the domainName's List?
I can do it with a Boolean field that will be turned to true if one of field is found for this case -
boolean found = false;
for(String s : domainNames ){
if(email.contains(s)){
found =true;
}
}
I want to know if there is a better way - in case I will have a huge amount of values to move on in the for loop for this.
Thanks!
apex string contains
apex string contains
asked Dec 9 at 13:57
Salvation
656
asked Dec 9 at 13:57
Salvation
656
asked Dec 9 at 13:57
Salvation
656
asked Dec 9 at 13:57
Salvation
656
asked Dec 9 at 13:57
Salvation
656
656
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
A shorter version of your code just checks the domain directly:
Boolean found = domainNames.contains(email.split('@',2)[1]);
There's other ways to do this, too, but this is probably the most straightforward version.
answered Dec 9 at 14:17
sfdcfox
247k11188424
Thank you sfdcfox !!
– Salvation
Dec 10 at 6:13
add a comment |
If you have control over the type of domainNames, you should consider changing its type to Set<string>. Sets hash their values, so checking whether they contain a particular value takes the same amount of time regardless of the number of elements in the set, compared to a List which must go through each element until it finds one that matches.
Set<String> domainNames = new Set<String>{'example.com', 'gmail.com'};
domainNames.contains(email.split('@', 2)[1]);
Also, the general solution to the question of whether a particular string contains any strings in a list where they could be in any part of the input string would be to do what you did, except you would use a break statement to end the loop once you've found a match:
boolean found = false;
for(String s : domainNames ){
if(email.contains(s)){
found = true;
break;
}
}
answered Dec 9 at 18:38
IllusiveBrian
3,143817
Thanks a lot. Both of the answers helped me but unfortunately, I can give the best answer only to one.
– Salvation
Dec 10 at 6:11
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
A shorter version of your code just checks the domain directly:
Boolean found = domainNames.contains(email.split('@',2)[1]);
There's other ways to do this, too, but this is probably the most straightforward version.
answered Dec 9 at 14:17
sfdcfox
247k11188424
Thank you sfdcfox !!
– Salvation
Dec 10 at 6:13
add a comment |
A shorter version of your code just checks the domain directly:
Boolean found = domainNames.contains(email.split('@',2)[1]);
There's other ways to do this, too, but this is probably the most straightforward version.
answered Dec 9 at 14:17
sfdcfox
247k11188424
Thank you sfdcfox !!
– Salvation
Dec 10 at 6:13
add a comment |
A shorter version of your code just checks the domain directly:
Boolean found = domainNames.contains(email.split('@',2)[1]);
There's other ways to do this, too, but this is probably the most straightforward version.
answered Dec 9 at 14:17
sfdcfox
247k11188424
A shorter version of your code just checks the domain directly:
Boolean found = domainNames.contains(email.split('@',2)[1]);
There's other ways to do this, too, but this is probably the most straightforward version.
answered Dec 9 at 14:17
sfdcfox
247k11188424
answered Dec 9 at 14:17
sfdcfox
247k11188424
answered Dec 9 at 14:17
sfdcfox
247k11188424
answered Dec 9 at 14:17
sfdcfox
247k11188424
247k11188424
Thank you sfdcfox !!
– Salvation
Dec 10 at 6:13
add a comment |
Thank you sfdcfox !!
– Salvation
Dec 10 at 6:13
Thank you sfdcfox !!
– Salvation
Dec 10 at 6:13
Thank you sfdcfox !!
– Salvation
Dec 10 at 6:13
add a comment |
If you have control over the type of domainNames, you should consider changing its type to Set<string>. Sets hash their values, so checking whether they contain a particular value takes the same amount of time regardless of the number of elements in the set, compared to a List which must go through each element until it finds one that matches.
Set<String> domainNames = new Set<String>{'example.com', 'gmail.com'};
domainNames.contains(email.split('@', 2)[1]);
Also, the general solution to the question of whether a particular string contains any strings in a list where they could be in any part of the input string would be to do what you did, except you would use a break statement to end the loop once you've found a match:
boolean found = false;
for(String s : domainNames ){
if(email.contains(s)){
found = true;
break;
}
}
answered Dec 9 at 18:38
IllusiveBrian
3,143817
Thanks a lot. Both of the answers helped me but unfortunately, I can give the best answer only to one.
– Salvation
Dec 10 at 6:11
add a comment |
If you have control over the type of domainNames, you should consider changing its type to Set<string>. Sets hash their values, so checking whether they contain a particular value takes the same amount of time regardless of the number of elements in the set, compared to a List which must go through each element until it finds one that matches.
Set<String> domainNames = new Set<String>{'example.com', 'gmail.com'};
domainNames.contains(email.split('@', 2)[1]);
Also, the general solution to the question of whether a particular string contains any strings in a list where they could be in any part of the input string would be to do what you did, except you would use a break statement to end the loop once you've found a match:
boolean found = false;
for(String s : domainNames ){
if(email.contains(s)){
found = true;
break;
}
}
answered Dec 9 at 18:38
IllusiveBrian
3,143817
Thanks a lot. Both of the answers helped me but unfortunately, I can give the best answer only to one.
– Salvation
Dec 10 at 6:11
add a comment |
If you have control over the type of domainNames, you should consider changing its type to Set<string>. Sets hash their values, so checking whether they contain a particular value takes the same amount of time regardless of the number of elements in the set, compared to a List which must go through each element until it finds one that matches.
Set<String> domainNames = new Set<String>{'example.com', 'gmail.com'};
domainNames.contains(email.split('@', 2)[1]);
Also, the general solution to the question of whether a particular string contains any strings in a list where they could be in any part of the input string would be to do what you did, except you would use a break statement to end the loop once you've found a match:
boolean found = false;
for(String s : domainNames ){
if(email.contains(s)){
found = true;
break;
}
}
answered Dec 9 at 18:38
IllusiveBrian
3,143817
If you have control over the type of domainNames, you should consider changing its type to Set<string>. Sets hash their values, so checking whether they contain a particular value takes the same amount of time regardless of the number of elements in the set, compared to a List which must go through each element until it finds one that matches.
Set<String> domainNames = new Set<String>{'example.com', 'gmail.com'};
domainNames.contains(email.split('@', 2)[1]);
Also, the general solution to the question of whether a particular string contains any strings in a list where they could be in any part of the input string would be to do what you did, except you would use a break statement to end the loop once you've found a match:
boolean found = false;
for(String s : domainNames ){
if(email.contains(s)){
found = true;
break;
}
}
answered Dec 9 at 18:38
IllusiveBrian
3,143817
answered Dec 9 at 18:38
IllusiveBrian
3,143817
answered Dec 9 at 18:38
IllusiveBrian
3,143817
answered Dec 9 at 18:38
IllusiveBrian
3,143817
3,143817
Thanks a lot. Both of the answers helped me but unfortunately, I can give the best answer only to one.
– Salvation
Dec 10 at 6:11
add a comment |
Thanks a lot. Both of the answers helped me but unfortunately, I can give the best answer only to one.
– Salvation
Dec 10 at 6:11
Thanks a lot. Both of the answers helped me but unfortunately, I can give the best answer only to one.
– Salvation
Dec 10 at 6:11
Thanks a lot. Both of the answers helped me but unfortunately, I can give the best answer only to one.
– Salvation
Dec 10 at 6:11
add a comment |
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