Questions tagged [string-building]
19 questions
39
votes
7 answers
How many String objects would be created when concatenating multiple Strings?
I was asked in an interview about the number of objects that will be created on the given problem:
String str1 = "First";
String str2 = "Second";
String str3 = "Third";
String str4 = str1 + str2 + str3;
I answered that there would be 6 objects…
bhpsh
- 571
- 4
- 7
6
votes
4 answers
Building a directory string from component parts in C#
If i have lots of directory names either as literal strings or contained in variables, what is the easiest way of combining these to make a complete path?
I know of Path.Combine but this only takes 2 string parameters, i need a solution that can…
Gary Willoughby
- 50,926
- 41
- 133
- 199
4
votes
4 answers
What problem does the StringBuilder solve?
Why would I use a StringBuilder over simply appending strings? For example why implement like:
StringBuilder sb = new StringBuilder;
sb.Append("A string");
sb.Append("Another string");
over
String first = "A string";
first += "Another string";
?
m.edmondson
- 30,382
- 27
- 123
- 206
2
votes
9 answers
PHP function to add data to string
My code:
$myText = "";
function addText($textString){
$myText .= $textString;
}
addText("Hello there...");
echo $myText;
Expected output:
Hello There...
$myText was empty.
Why does this happen?
Dave
- 1,076
- 5
- 15
- 30
2
votes
3 answers
Best way to build string avoiding repetition
I have a hard coded string that will be used in a URL and I'm wanting to know is what the best way to build this string without having to repeat the words country, or, and, number? This is a shortened version as there are more countries and numbers…
user3586417
2
votes
1 answer
Building a string in C
This seems like a question that would have been asked before, but I couldn't find it. (If you do, please point me there and close this as a duplicate.)
I have C code which works something like this:
printf("some characters");
for (; n >= 0; n--)
{
…
Charles
- 11,269
- 13
- 67
- 105
2
votes
2 answers
Building an Evironment Variable with SET using a FOR loop in Command Prompt
I am having trouble with the following command prompt commands (in Windows XP).
set SOMEVAR=
for /F %i in (1 2 3) do set SOMEVAR=%SOMEVAR% "%i"
echo %SOMEVAR%
I expect it to build the SOMEVAR variable so that it contains each item in…
Synetech
- 9,643
- 9
- 64
- 96
1
vote
2 answers
String building in C++ exception’s what()
This answer declares a private static ostringstream. Is this thread safe? If two threads throw (and catch, and log what()) the exception at the same time, does this work reliably? If I declare the ostringstream locally, like:
virtual const char*…
Matthias Ronge
- 9,403
- 7
- 47
- 63
1
vote
3 answers
Building a string using ternary operations
I'm trying to build a string using ternary operations and pass it to a cell of an Excel file. Here is my code:
ws.Rows[index].Cells[24].Value = i.IliskiliCokluIsler.Count == 0 ?
i.IliskiliMahalle.MahalleAdi != null ?…
jason
- 6,962
- 36
- 117
- 198
1
vote
0 answers
String Building in SQL Server
According to the Microsoft Documentation sp_send_dbmail must be a semicolon delimited list. However, in many of my applications I am unable to guarantee that this list will be clean. I need a robust way for ensuring a syntactically valid list of…
Chiramisu
- 4,687
- 7
- 47
- 77
1
vote
1 answer
C++: how to output data to multiple .dat files?
I have a research project I'm working on. I am a beginner in C++ and programming in general. I have already made a program that generates interacting particles that move on continuous space as time progresses. The only things my program outputs are…
Dima1982
- 189
- 3
- 18
0
votes
3 answers
Building a query string based on variable values. Where is the mistake?
I am trying to create a query string based on GET values passed to common vars:
if isset, gTipo = $_GET['tipo'] and others like this.
So, here is the code that is not working:
$sqlLista = 'SELECT * FROM produtos';
if($gTipo <> 0 || $gLinha <>…
Acchile Biagioli
- 21
- 2
0
votes
3 answers
Generating HTML with strings
I am trying to add an image into HTML. Using the following works:
All i want to do is replace the http with a variable so I can call in the website rather than have it be…
All i want to do is replace the http with a variable so I can call in the website rather than have it be…
Caz Meechan
- 3
- 1
0
votes
2 answers
How to perform Split and Stringbuilding in SQL?
I'm a SQL acolyte, spending most of my time in Powershell. So for the purposes of this, I shall express myself thusly. Basically, I have a column of FullName, that contains FirstName LastName, and I want it restructured to LastName, Firstname in a…
user3066571
- 1,381
- 4
- 14
- 37
0
votes
3 answers
Building a Query From a List of Strings
How would you take an arbitrary list of strings (of the form "%[text]%") and a database column, and turn them into a SQL query that does a LIKE comparison for each string in the list?
An example: I have three strings in my list, "%bc%", "%def%" and…
Merus
- 8,796
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