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Reading Excel files from C#
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var fileName = string.Format("{0}\\fileNameHere", Directory.GetCurrentDirectory());
var connectionString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0; data source={0}; Extended Properties=Excel 8.0;", fileName);
var adapter = new OleDbDataAdapter("SE...
How do I split a string, breaking at a particular character?
...t 4~New York~NY~12345';
var fields = input.split('~');
var name = fields[0];
var street = fields[1];
// etc.
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How to check iOS version?
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1012
The quick answer …
As of Swift 2.0, you can use #available in an if or guard to protect co...
What is the purpose of the : (colon) GNU Bash builtin?
...nds. true was instead simply aliased to :, and false to something like let 0.
: is slightly better than true for portability to ancient Bourne-derived shells. As a simple example, consider having neither the ! pipeline operator nor the || list operator (as was the case for some ancient Bourne shell...
Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
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105
This thread mentions:
If you don't remember the empty tree sha1, you can always derive it w...
What Every Programmer Should Know About Memory?
...of Ulrich Drepper's What Every Programmer Should Know About Memory from 2007 is still valid. Also I could not find a newer version than 1.0 or an errata.
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”
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10 Answers
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Find the files existing in one directory but not in the other [closed]
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390
votes
diff -r dir1 dir2 | grep dir1 | awk '{print $4}' > difference1.txt
Expla...
case-insensitive list sorting, without lowercasing the result?
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202
In Python 3.3+ there is the str.casefold method that's specifically designed for caseless match...
Printing hexadecimal characters in C
...ur case), your chars are being promoted to int via sign-extension.
Since c0 and 80 have a leading 1-bit (and are negative as an 8-bit integer), they are being sign-extended while the others in your sample don't.
char int
c0 -> ffffffc0
80 -> ffffff80
61 -> 00000061
Here's a solution:...