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Aren't Python strings immutable? Then why does a + “ ” + b work?
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It's even more convincing to try something like x = 'abc'; x[1] = 'x' in the Python repl
– xpmatteo
May 23 '17 at 6:11
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Generate table relationship diagram from existing schema (SQL Server) [closed]
... SQL Server Management Studio Express (if not installed ) . Just right Click on Database Diagrams and create new diagram. Select the exisiting tables and if you have specified the references in your tables properly. You will be able to see the complete diagram of selected tables.
For further refere...
How to get input type using jquery?
...g on the input type. So if the type is a radio, I need to get which is checked, and if it is a checkbox I need to now which are checked, and if it is a drop down I need to know which is selected, and I if it is a text/textarea I need to know the values.
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How to get everything after last slash in a URL?
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Casimir Crystal
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answered Aug 31 '11 at 7:28
Luke404Luke404
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Opposite of %in%: exclude rows with values specified in a vector
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You can use the ! operator to basically make any TRUE FALSE and every FALSE TRUE. so:
D2 = subset(D1, !(V1 %in% c('B','N','T')))
EDIT:
You can also make an operator yourself:
'%!in%' <- function(x,y)!('%in%'(x,y))
c(1,3,11)%!in%1:10
[1] FALSE FALSE TRUE
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Is there any way to ignore INSTALL_FAILED_VERSION_DOWNGRADE on application install with the Android
It seems like the most recent Android 4.2 has introduced this error condition on installation when one attempts to install an APK with a lower version. In prior versions of Android, one would be able to install older APK's simply via adb install -r <link to APK> . For debugging purposes, I f...
Is there a command line utility for rendering GitHub flavored Markdown?
I'm wondering if there is a command line utility for taking a GitHub flavored Markdown file and rendering it to HTML.
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What are bitwise operators?
...y delved into it in either an academic or professional setting, so stuff like these bitwise operators really escapes me.
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Does “\d” in regex mean a digit?
...d 3 but not 2 . I was wondering if \d matches a digit satisfying what kind of requirement? I am talking about Python style regex.
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How to convert date to timestamp in PHP?
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This method works on both Windows and Unix and is time-zone aware, which is probably what you want if you work with dates.
If you don't care about timezone, or want to use the time zone your server uses:
$d = DateTime::createFromFormat('d...