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How to do constructor chaining in C#
...oding default values (0 and "") in more than one place (less chance for an error). For example: public Foo(int id) : this () { this.id = id; }? Alternatively, I was also considering: public Foo(int id) : this ("") { this.id = id; }. Just looking for the best logical way to chain them, appreciate any...
Calling async method synchronously
...
I still got the error Dialog popup (against my will), with the buttons 'Switch To' or 'Retry'…. however, the call actually executes and does return with a proper response.
– Jonathan Hansen
May 15 '19...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... %>% filter(complete.cases(.))
or this:
library(tidyr)
df %>% drop_na
If you want to filter based on one variable's missingness, use a conditional:
df %>% filter(!is.na(x1))
or
df %>% drop_na(x1)
Other answers indicate that of the solutions above na.omit is much slower but tha...
Count number of records returned by group by
...´s answer
– Bjinse
Dec 13 '12 at 8:05
How would I echo that counted number?
– McDan Garrett
...
New Array from Index Range Swift
... cast would use the as operator: numbers as Array which would result in an error.
– j b
Jun 10 '14 at 9:04
The languag...
Could not find method compile() for arguments Gradle
...e sure that you are editing the correct build.gradle file. I received this error when editing android/build.gradle rather than android/app/build.gradle.
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How to detect iPhone 5 (widescreen devices)?
..._EPSILON )
The use of fabs with the epsilon is here to prevent precision errors, when comparing floating points, as pointed in the comments by H2CO3.
So from now on you can use it in standard if/else statements:
if( IS_IPHONE_5 )
{}
else
{}
Edit - Better detection
As stated by some people, th...
Swift native base class or NSObject
...example, where we don't base on NSObject, the compiler correctly spots the error in testIncorrect_CompilerShouldSpot,
reporting "... 'MyClass' is not convertible to 'MirrorDisposition'"
class MyClass {
let mString = "Test"
func getAsString() -> String {
return mString
}
func testIn...
How to manually create icns files using iconutil?
When I'm validating my app I get this error:
18 Answers
18
...
How to create a jQuery plugin with methods?
...turn methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + methodOrOptions + ' does not exist on jQuery.tooltip' );
}
};
})( jQuery );
Basically you store your functions in an array (scoped to the wrapping function) and check for an entry if th...