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How do I get the current date in JavaScript?
... moment as if it were a language. Mine here uses the same common format as PHP: date.
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Date.format.min.js 5.08 KB
dateFormat.min.js 4.16 KB
Flavor 1 new Date().format(String)
My Personal Fav. I know the taboo but works great on the Date Object. Just be aware of any other mods yo...
Pandas DataFrame Groupby two columns and get counts
...e your second question:
In [56]: df.groupby(['col5','col2']).size().reset_index().groupby('col2')[[0]].max()
Out[56]:
0
col2
A 3
B 2
C 1
D 3
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How do you divide each element in a list by an int?
...
@Casa: Someone tested this at stackoverflow.com/q/1247490 . The conclusion seems to be that list comprehensions win, in this particular case.
– Brian
Nov 23 '11 at 16:15
...
Find size of an array in Perl
...dard way to get an array's size.
The second way actually returns the last index of the array, which is not (usually) the same as the array size.
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How to change href of tag on button click through javascript
...Link").onclick = function() {
document.getElementById("abc").href="xyz.php";
return false;
};
</script>
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How to convert SQL Query result to PANDAS Data Structure?
... way to do it, as you don't need to manually use .keys() to get the column index. Probably Daniel's answer was written before this method existed. You can also use pandas.io.sql.read_frame()
– RobinL
Oct 13 '13 at 13:54
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How to find a hash key containing a matching value
....9 and greater:
hash.key(value) => key
Ruby 1.8:
You could use hash.index
hsh.index(value) => key
Returns the key for a given value. If
not found, returns nil.
h = { "a" => 100, "b" => 200 }
h.index(200) #=> "b"
h.index(999) #=> nil
So to get "oran...
Rails 3: Get Random Record
... big tables but more sql-style
UPD. You can use the following trick on an indexed column (PostgreSQL syntax):
select *
from my_table
where id >= trunc(
random() * (select max(id) from my_table) + 1
)
order by id
limit 1;
...
Definitive way to trigger keypress events with jQuery
I've read all the answers on to this questions and none of the solutions seem to work.
10 Answers
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How to find and return a duplicate value in array
...
Simply find the first instance where the index of the object (counting from the left) does not equal the index of the object (counting from the right).
arr.detect {|e| arr.rindex(e) != arr.index(e) }
If there are no duplicates, the return value will be nil.
I be...