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How to delete a row by reference in data.table?
...ting to NA (matching the NA-type for the first column)
set(DT,1:2, 1:3 ,NA_character_)
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Comparing Dates in Oracle SQL
...u should transform your string into a date. Either by using the built-in TO_DATE() function, or a date literal.
TO_DATE()
select employee_id
from employee
where employee_date_hired > to_date('31-DEC-95','DD-MON-YY')
This method has a few unnecessary pitfalls
As a_horse_with_no_name noted...
Idiomatic way to convert an InputStream to a String in Scala
...eamReader)
Iterator continually bufferedReader.readLine takeWhile (_ != null) mkString
}
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What is the “assert” function?
...ed java-samples that gets this so wrong.
– underscore_d
Jul 11 '16 at 18:43
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How to sort an array in descending order in Ruby
... { ary.sort{ |a,b| a[:bar] <=> b[:bar] }.reverse } }
x.report("sort_by -a[:bar]") { n.times { ary.sort_by{ |a| -a[:bar] } } }
x.report("sort_by a[:bar]*-1") { n.times { ary.sort_by{ |a| a[:bar]*-1 } } }
x.report("sort_by.reverse!") { n.times { ary.sort_by{ |a| a[:bar] }.reverse } }
e...
MAC addresses in JavaScript
....ConnectServer(".");
var properties = s.ExecQuery("SELECT * FROM Win32_NetworkAdapterConfiguration");
var e = new Enumerator(properties);
var output;
output = '<table border="0" cellPadding="5px" cellSpacing="1px" bgColor="#CCCCCC">';
output = output + '<tr bgColor=...
What does $(function() {} ); do?
...thand for $(document).ready(), as in: $(document).ready(function() {
YOUR_CODE_HERE
});. Sometimes you have to use it because your function is running before the DOM finishes loading.
Everything is explained here: http://docs.jquery.com/Tutorials:Introducing_$(document).ready()
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How can I get the current language in Django?
...
Functions of particular interest are django.utils.translation.get_language() which returns the language used in the current thread. See documentation.
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How do I change selected value of select2 dropdown with JqGrid?
... be called redundantly upon triggered change().
– van_folmert
Feb 22 '16 at 10:37
If this doesn't work correctly add a...
String comparison in Python: is vs. == [duplicate]
...ython allows anything to be used as a boolean expression. If you have bool_a == 3 and bool_b == 4, then bool_a != bool_b, but bool_a xor bool_b is false (because both terms are true).
– dan04
Jun 7 '10 at 12:57
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