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Convert a character digit to the corresponding integer in C
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As per other replies, this is fine:
char c = '5';
int x = c - '0';
Also, for error checking, you may wish to check isdigit(c) is true first. Note that you cannot completely portably do the same for letters, for example:
char c = 'b';
int x = c - 'a'; // x is now not necessarily 1
Th...
How to get the max of two values in MySQL?
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edited May 24 '19 at 10:13
answered Oct 14 '09 at 11:29
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UITextfield leftView/rightView padding on iOS7
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90
Was just working on this myself and used this solution:
- (CGRect) rightViewRectForBounds:(CGRe...
Best way to work with transactions in MS SQL Server Management Studio
...iolation error.
DELETE FROM Production.Product
WHERE ProductID = 980;
END TRY
BEGIN CATCH
SELECT
ERROR_NUMBER() AS ErrorNumber
,ERROR_SEVERITY() AS ErrorSeverity
,ERROR_STATE() AS ErrorState
,ERROR_PROCEDURE() AS ErrorProcedure
,ERROR_LINE() AS Er...
jQuery find element by data attribute value
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Use Attribute Equals Selector
$('.slide-link[data-slide="0"]').addClass('active');
Fiddle Demo
.find()
it works down the tree
Get the descendants of each element
in the current set of matched elements, filtered by a selector, jQuery object, or element.
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Getting list of lists into pandas DataFrame
...ctly:
df = pd.DataFrame(table, columns=headers)
df
Heading1 Heading2
0 1 2
1 3 4
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The cast to value type 'Int32' failed because the materialized value is null
...where there can be unexpected nulls in different places. ...DefaultIfEmpty(0).Sum(0) can help in this (quite simple) case, where there might be no elements and sql's SUM returns null whereas c# expect 0.
A more general approach is to use ?? which will be translated to COALESCE whenever there is a r...
Finding Number of Cores in Java
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edited Nov 17 '11 at 9:03
answered Jan 21 '11 at 13:58
d...
PHP: Count a stdClass object
...urn the right number when I run the count($obj) function. The object has 30 properties, but the return on the count() function is say 1.
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Multiple queries executed in java in single statement
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140
I was wondering if it is possible to execute something like this using JDBC.
"SELECT FROM * TAB...