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How to run multiple Python versions on Windows
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edited May 19 at 10:54
Piotr Dobrogost
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Test if characters are in a string
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404
Use the grepl function
grepl(value, chars, fixed = TRUE)
# TRUE
Use ?grepl to find out more...
What is a segmentation fault?
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edited Feb 27 '10 at 10:23
aib
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answe...
How do I get the result of a command in a variable in windows?
...T "%1"=="" GOTO ADDV
SET VAR=
FOR /F %%I IN ('DIR *.TXT /B /O:D') DO CALL %0 %%I
SET VAR
GOTO END
:ADDV
SET VAR=%VAR%!%1
:END
All output lines are stored in VAR separated with "!".
@John: is there any practical use for this? I think you should watch PowerShell or any other programming language ...
SQL JOIN - WHERE clause vs. ON clause
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902
They are not the same thing.
Consider these queries:
SELECT *
FROM Orders
LEFT JOIN OrderLine...
How do I get a plist as a Dictionary in Swift?
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In swift 3.0 Reading from Plist.
func readPropertyList() {
var propertyListFormat = PropertyListSerialization.PropertyListFormat.xml //Format of the Property List.
var plistData: [String: AnyObject] = [:] //Our data
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SecItemAdd and SecItemCopyMatching returns error code -34018 (errSecMissingEntitlement)
...ice from Xcode I would try to access the keychain but fail due to error -34018. This doesn't match any of the documented keychain error codes and can't be consistently reproduced. (happens maybe 30% of the time, and it's not clear to me why it happens). What makes debugging this problem very difficu...
Why no generics in Go?
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edited Apr 26 '13 at 15:07
trss
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answered Oct 12 '...
Using a dispatch_once singleton model in Swift
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