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To find whether a column exists in data frame or not
... the columns to two large dataframes to see which column names are missing from the other column?
– sar
Apr 3 at 17:48
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How to close tag properly?
...ml to what it thinks you meant. That may mean it turns a tag, for example, from
<div /> into <div></div>. Or maybe it just ignores the final slash on <img ... />.
see 2016: Serve HTML5 as XHTML 5.0 for legacy validation.
see: 2011 discussion and additional links here, though ...
iPhone - Get Position of UIView within entire UIWindow
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Here is a combination of the answer by @Mohsenasm and a comment from @Ghigo adopted to Swift
extension UIView {
var globalFrame: CGRect? {
let rootView = UIApplication.shared.keyWindow?.rootViewController?.view
return self.superview?.convert(self.frame, to: rootView)
...
Showing data values on stacked bar chart in ggplot2
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From ggplot 2.2.0 labels can easily be stacked by using position = position_stack(vjust = 0.5) in geom_text.
ggplot(Data, aes(x = Year, y = Frequency, fill = Category, label = Frequency)) +
geom_bar(stat = "identity") +
...
How do I update an entity using spring-data-jpa?
...found in the database.
public void updateUser(Userinfos u) {
User userFromDb = userRepository.findById(u.getid());
// crush the variables of the object found
userFromDb.setFirstname("john");
userFromDb.setLastname("dew");
userFromDb.setAge(16);
userRepository.save(userFromD...
Load Testing with AB … fake failed requests (length)
...hances are your version of ab is behind and -l won't take. You can install from source or via homebrew, but "brew install ab" doesn't work because it's part of the apache package - you can install with "brew install homebrew/apache/ab".
– netpoetica
Jan 5 '15 a...
How is a non-breaking space represented in a JavaScript string?
... is char 0xa0 (160 dec)
x = '';
}
Or you can also create the character from the character code manually it in its Javascript escaped form:
var x = td.text();
if (x == String.fromCharCode(160)) { // Non-breakable space is char 160
x = '';
}
More information about String.fromCharCode is avail...
Difference between ref and out parameters in .NET [duplicate]
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On the upside, ref can save an extra copy of a Struct from being made during a function call. On the downside, a Class could be initialized to null, so you STILL have to guard against that.
– Michael Brown
Oct 5 '12 at 16:54
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How to implement “confirmation” dialog in Jquery UI dialog?
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+1 almost works... but see answer from @lloydphillips for a correction
– rohancragg
Feb 18 '10 at 12:59
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Use-case of `oneway void` in Objective-C?
...It was gone for the past few months, but I couldn't find another reference from Apple so I just left it.
– ughoavgfhw
Nov 5 '11 at 20:00
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