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Correct way to use get_or_create?
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FYI created is a boolean. True if created, False if it is fetched
– Josh
Oct 4 '18 at 8:45
3
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How do I cast a variable in Scala?
...2D] method, but with greater flexibility. For example, you could provide different branches for various types, effectively performing multiple conditional casts at the same time. Finally, you don't really need to throw an exception in the catch-all area, you could also return null (or preferably, ...
Disable spell-checking on HTML textfields
...ccepted? it does not make sense because it can override the users settings if the browser allows it. see ms2ger's answer.
– usr
Aug 15 '09 at 22:52
1
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Explain the encapsulated anonymous function syntax
...ork because it is being parsed as a FunctionDeclaration, and the name identifier of function declarations is mandatory.
When you surround it with parentheses it is evaluated as a FunctionExpression, and function expressions can be named or not.
The grammar of a FunctionDeclaration looks like this:...
angularjs directive call function specified in attribute and pass an argument to it
I want to create a directive that links to an attribute. The attribute specifies the function that should be called on the scope. But I also want to pass an argument to the function that is determined inside the link function.
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difference between primary key and unique key
...cannot be NULL - e.g. MySQL adds NOT NULL
Primary Key is a unique key identifier of the record
Unique Key:
Can be more than one unique key in one table
Unique key can have NULL values
It can be a candidate key
Unique key can be NULL ; multiple rows can have NULL values and therefore may not be c...
Search for all files in project containing the text 'querystring' in Eclipse
...le Search" tab.
additional search options
search for resources: Ctrl + Shift + R
search for Java types: Ctrl + Shift + T
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How can you check which options vim was compiled with?
...ction with the feature you are looking for. The code below will return a 1 if it has the feature or 0 if it does not.
:echo has('python')
For a list of features see :h +feature-list
For more information see:
:h :version
:h has(
:h feature-list
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How to avoid warning when introducing NAs by coercion
...t the problematic characters to NA first. For your particular problem, taRifx::destring does just that. This way if you get some other, unexpected warning out of your function, it won't be suppressed.
> library(taRifx)
> x <- as.numeric(c("1", "2", "X"))
Warning message:
NAs introduced b...
Get Slightly Lighter and Darker Color from UIColor
...(UIColor *)lighterColorForColor:(UIColor *)c
{
CGFloat r, g, b, a;
if ([c getRed:&r green:&g blue:&b alpha:&a])
return [UIColor colorWithRed:MIN(r + 0.2, 1.0)
green:MIN(g + 0.2, 1.0)
blue:MIN(b + 0.2, 1.0)...