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Looping through a hash, or using an array in PowerShell
... how:
$hash = @{
a = 1
b = 2
c = 3
}
$hash.Keys | % { "key = $_ , value = " + $hash.Item($_) }
Output:
key = c , value = 3
key = a , value = 1
key = b , value = 2
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How to correctly save instance state of Fragments in back stack?
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This is not related to question, onSaveInstance is not called when fragment is putted to backstack
– Tadas Valaitis
Jan 7 '15 at 10:14
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Nested defaultdict of defaultdict
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For an arbitrary number of levels:
def rec_dd():
return defaultdict(rec_dd)
>>> x = rec_dd()
>>> x['a']['b']['c']['d']
defaultdict(<function rec_dd at 0x7f0dcef81500>, {})
>>> print json.dumps(x)
{"a": {"b": {"c": {"d": {}}}}}
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Get encoding of a file in Windows
This isn't really a programming question, is there a command line or Windows tool (Windows 7) to get the current encoding of a text file? Sure I can write a little C# app but I wanted to know if there is something already built in?
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Removing pip's cache?
I need to install psycopg2 v2.4.1 specifically. I accidentally did:
17 Answers
17
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Check if a variable is of function type
...unction(functionToCheck) {
return functionToCheck && {}.toString.call(functionToCheck) === '[object Function]';
}
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Git: can't undo local changes (error: path … is unmerged)
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It's always amusing when the highest voted answer basically just says "you're doing it wrong" :)
– nathanchere
Dec 16 '12 at 23:39
4
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Copy data into another table
...the column list for newTable is optional if you are specifying a value for all columns and selecting columns in the same order as newTable's schema):
INSERT INTO newTable (col1, col2, col3)
SELECT column1, column2, column3
FROM oldTable
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How to display the default iOS 6 share action sheet with available share options?
...he UIActivityViewController stated in the other answer makes this trivial. All you have to do is specify the text/image/URL that you want to share and present the activity view controller modally and iOS will automatically display all applicable sharing services. Examples:
Objective-C
- (void)shar...
git checkout tag, git pull fails in branch
I have cloned a git repository and then checked out a tag:
14 Answers
14
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