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How do I count the number of occurrences of a char in a String?
I have the string
45 Answers
45
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How to convert a number to string and vice versa in C++
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Update for C++11
As of the C++11 standard, string-to-number conversion and vice-versa are built in into the standard library. All the following functions are present in <string> (as per paragraph 21.5).
string to numeric
float stof(const string&am...
How can I unit test Arduino code?
...rks-in-progress in branches other than master, so check those branches for extra tests, too.
I chose to write my own lightweight test routines, but more robust unit-test frameworks like CppUnit are also available.
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Check if a string has white space
I'm trying to check if a string has white space . I found this function but it doesn't seem to be working:
7 Answers
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In C# what is the difference between ToUpper() and ToUpperInvariant()?
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public class Test
{
[STAThread]
static void Main()
{
string invariant = "iii".ToUpperInvariant();
CultureInfo turkey = new CultureInfo("tr-TR");
Thread.CurrentThread.CurrentCulture = turkey;
string cultured = "iii".ToUpper();
Font bigFont = new ...
How to convert integer to string in C? [duplicate]
...afer in that you specify how much input you're taking. Otherwise, If your string has multi-byte characters, or ends up longer than you expected due to large numbers, you can overflow your buffer and crash your program (etc).
– gone
Apr 23 '14 at 9:06
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Why does String.valueOf(null) throw a NullPointerException?
according to the documentation, the method String.valueOf(Object obj) returns:
4 Answers
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How to convert a string to integer in C?
I am trying to find out if there is an alternative way of converting string to integer in C.
12 Answers
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Convert a character digit to the corresponding integer in C
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If, by some crazy coincidence, you want to convert a string of characters to an integer, you can do that too!
char *num = "1024";
int val = atoi(num); // atoi = ASCII TO Int
val is now 1024. Apparently atoi() is fine, and what I said about it earlier only applies to me (on O...
PHP passing $_GET in linux command prompt
...opulate $_GET anyway, you can do this:
// bash command:
// export QUERY_STRING="var=value&arg=value" ; php -e myscript.php
parse_str($_SERVER['QUERY_STRING'], $_GET);
print_r($_GET);
/* outputs:
Array(
[var] => value
[arg] => value
)
*/
You can also execute a...