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open() in Python does not create a file if it doesn't exist
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830
You should use open with the w+ mode:
file = open('myfile.dat', 'w+')
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Inverse dictionary lookup in Python
... Don't forget that the value may be found on any number of keys, including 0 or more than 1.
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How do you debug a regex? [closed]
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answered Feb 27 '10 at 19:49
MickMick
12.5k99 gold badges6161 silver badges117117 bronze badges
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How do I check if a variable exists in a list in BASH
...tains() {
[[ $1 =~ (^|[[:space:]])$2($|[[:space:]]) ]] && exit(0) || exit(1)
}
to use it:
contains aList anItem
echo $? # 0： match, 1: failed
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Duplicate and rename Xcode project & associated folders [closed]
...d in another place. Great tutorial - just what I needed. (Tested w Xcode 5.0.1 / iOS 7.0)
– Mac
Oct 22 '13 at 15:23
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Why can't an anonymous method be assigned to var?
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edited Feb 11 '11 at 7:03
answered Feb 11 '11 at 6:58
Er...
Setting the zoom level for a MKMapView
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201
I found myself a solution, which is very simple and does the trick. Use MKCoordinateRegionMakeW...
Entity Framework 4 / POCO - Where to start? [closed]
...disadvantages of a POCO approach.
http://blogs.msdn.com/b/adonet/archive/2009/05/21/poco-in-the-entity-framework-part-1-the-experience.aspx
http://blogs.msdn.com/b/adonet/archive/2009/05/28/poco-in-the-entity-framework-part-2-complex-types-deferred-loading-and-explicit-loading.aspx
http://blogs.m...
Java String to SHA1
...String byteArrayToHexString(byte[] b) {
String result = "";
for (int i=0; i < b.length; i++) {
result +=
Integer.toString( ( b[i] & 0xff ) + 0x100, 16).substring( 1 );
}
return result;
}
BTW, you may get more compact representation using Base64. Apache Commons Codec ...
Best way to give a variable a default value (simulate Perl ||, ||= )
...ame'] : 'john doe'.
– VPhantom
May 20 at 18:33
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