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R apply function with multiple parameters
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but note that myfxn may be vectorised, in which case one should use myfxn(unlist(mylist), var2=var2)
– baptiste
Jul 26 '11 at 21:08
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In Postgresql, force unique on combination of two columns
... a unique identifier because it does not exclude null values.)" postgresql.org/docs/8.1/static/ddl-constraints.html#AEN2038
– ndequeker
Feb 3 '17 at 13:53
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Using Rails serialize to save hash to database
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The column type is wrong. You should use Text instead of String. Therefore, your migration should be:
def self.up
add_column :users, :multi_wrong, :text
end
Then Rails will properly convert it into YAML for you (and perform proper serialization). Strings fields are limited in size and wi...
How can I add a class to a DOM element in JavaScript?
How do I add a class for the div ?
10 Answers
10
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is it possible to evenly distribute buttons across the width of an android linearlayout
I have a linear layout (oriented horizontally) that contains 3 buttons. I want the 3 buttons to have a fixed width and be evenly distributed across the width of the linear layout.
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Convert Unix timestamp to a date string
...digits instead of 13), otherwise you'll get invalid results (this is true for macOS' date).
– emerino
Jun 4 '18 at 17:29
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Positive Number to Negative Number in JavaScript?
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-Math.abs(num) => Always negative
You do realize however, that for your code
if($this.find('.pdxslide-activeSlide').index() < slideNum-1){ slideNum = -slideNum }
console.log(slideNum)
If the index found is 3 and slideNum is 3,
then 3 < 3-1 => false
so slideNum remains positive...
C# nullable string error
...ence type and already "nullable".
Nullable<T> and the ? suffix are for value types such as Int32, Double, DateTime, etc.
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C# difference between == and Equals()
I have a condition in a silverlight application that compares 2 strings, for some reason when I use == it returns false while .Equals() returns true .
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What is the difference between Int and Integer?
...old any number no
matter how big, up to the limit of
your machine's memory…. This means you never have
arithmetic overflows. On the other
hand it also means your arithmetic is
relatively slow. Lisp users may
recognise the "bignum" type here.
"Int" is the more common 32 or 64 bit
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