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Simple question about declaring an empty string in C

By : Sara Campbell
Date : September 15 2020, 09:00 AM
wish help you to fix your issue
I did not get any compiler warning when I was declaring a string in the following ways
code :

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simple question: Difficulty in declaring and using variable

By : user2068743
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further The basic problem is lines like this
code :
if (Model.ReferenceFields != null)
    int count = 1; 
    foreach (var referenceName in Model.ReferenceFields)
        var value = "value";
        value = value + count.ToString(); 
        <td><input type="hidden" name="Tests.Index" value='<%= value %>' /></td>
        <td><input type="text" name="Tests['<%= value %>'].Value"/></td>
        <td><input type="button" value= "Add" /></td></tr>

Simple question: Why does the string library function std::string::find always return std::string::npos?

By : user3199391
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , cin >> choice stops reading before the first whitespace. You want getline(std::cin, choice) here.

declaring empty string variable in c

By : pranith kumar
Date : March 29 2020, 07:55 AM
this will help Arrays in C must have their size known when they are created, and the size cannot be changed after that.
So you must specify a size for all of your arrays.
code :
char first[100] = { 0 };    // avoid garbage in case input fails
scanf("%99s", first);

Question with creating/declaring data types(int,string,streamreader)

By : ROC
Date : March 29 2020, 07:55 AM
With these it helps In the case of the string, string a = ""; is not the same as string b = new string();.

Postgres group by empty string question to include empty string in output

By : user3079173
Date : March 29 2020, 07:55 AM
Hope this helps You need a CTE which returns all possible combinations of phone and group and a left join to the table so you can group by phone:
code :
with cte as (
  select * 
  from (
    select distinct phone from mytable   
  ) m cross join (
    select distinct "group" from mytable  
  ) g 
select c.phone, string_agg(coalesce(t.spec, ''''''), ',') spec
from cte c left join mytable t
on t.phone = c.phone and t."group" = c."group"
group by c.phone
| phone | spec           |
| ----- | -------------- |
| 1     | Lock,Full,Face |
| 2     | Lock,'',Face   |
| 3     | '',Scan,''     |
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