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Is there an easy way to return a string repeated X number of times?
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If you only intend to repeat the same character you can use the string constructor that accepts a char and the number of times to repeat it new String(char c, int count).
For example, to repeat a dash five times:
string result = new String('-', 5);
Output: ----...
Best way to reverse a string
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public static string Reverse( string s )
{
char[] charArray = s.ToCharArray();
Array.Reverse( charArray );
return new string( charArray );
}
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Using XPATH to search text containing
...with plain XML and XSL files in Microsoft's XML Notepad:
<xsl:value-of select="count(//td[text()='&nbsp;'])" />
The value returned is 1, which is the correct value in my test case.
However, I did have to declare nbsp as an entity within my XML and XSL using the following:
<!DOCTYP...
Simple Digit Recognition OCR in OpenCV-Python
...de a small code in OpenCV. It does following things:
It loads the image.
Selects the digits ( obviously by contour finding and applying constraints on area and height of letters to avoid false detections).
Draws the bounding rectangle around one letter and wait for key press manually. This time we...
How can I remove non-ASCII characters but leave periods and spaces using Python?
...h a .txt file. I want a string of the text from the file with no non-ASCII characters. However, I want to leave spaces and periods. At present, I'm stripping those too. Here's the code:
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Is the size of C “int” 2 bytes or 4 bytes?
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"16 bits. In that case, int, is 2 bytes" can be wrong, if CHAR_BIT is 16, sizeof(int) can be 1 byte (or char).
– 12431234123412341234123
Mar 3 '17 at 14:55
6
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What is the difference between String.slice and String.substring?
...te #3:slice()==substring()
Using Negative Numbers as an Argument:
slice() selects characters starting from the end of the string
substr()selects characters starting from the end of the string
substring() Doesn't Perform
Note #3:slice()==substr()
if the First Argument is Greater than the Second:
sl...
How can I check if a single character appears in a string?
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You can use string.indexOf('a').
If the char a is present in string :
it returns the the index of the first occurrence of the character in
the character sequence represented by this object, or -1 if the
character does not occur.
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Psql list all tables
...This is where the INFORMATION_SCHEMA comes to the rescue. To list tables:
SELECT table_name FROM information_schema.tables WHERE table_schema = 'public';
BTW, if you ever want to see what psql is doing in response to a backslash command, run psql with the -E flag. eg:
$ psql -E regress
regre...
Delete last char of string
...oupids.Length - 1);
MSDN:
String.Remove(Int32):
Deletes all the characters from this string beginning at a specified
position and continuing through the last position
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