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Haskell: Lists, Arrays, Vectors, Sequences
...ike
ones :: [Integer]
ones = 1:ones
twos = map (+1) ones
tenTwos = take 10 twos
work wonderfully. Infinite data structures rock.
Lists in Haskell provide an interface much like iterators in imperative languages (because of laziness). So, it makes sense that they are widely used.
On the ot...
How can I redirect the output of the “time” command?
...
104
you can redirect the time output using,
(time ls) &> file
Because you need to take (...
Oracle: how to UPSERT (update or insert into a table?)
...drop table mergetest;
create table mergetest(a number, b number);
call ups(10);
call ups(10);
call ups(20);
select * from mergetest;
A B
---------------------- ----------------------
10 2
20 1
...
How do you create an asynchronous method in C#?
...keyword:
private static async Task<DateTime> CountToAsync(int num = 10)
{
for (int i = 0; i < num; i++)
{
await Task.Delay(TimeSpan.FromSeconds(1));
}
return DateTime.Now;
}
If your async method is doing CPU work, you should use Task.Run:
private static async Task<DateTi...
Using smart pointers for class members
... |
edited Apr 7 '13 at 10:25
answered Mar 26 '13 at 23:06
...
Regular Expression to reformat a US phone number in Javascript
...one = phone.replace(/[^\d]/g, "");
//check if number length equals to 10
if (phone.length == 10) {
//reformat and return phone number
return phone.replace(/(\d{3})(\d{3})(\d{4})/, "($1) $2-$3");
}
return null;
}
var phone = '(123)4567890';
phone = normalize(phone);...
How can I determine the type of an HTML element in JavaScript?
..... }
– Erik Koopmans
Nov 6 '17 at 7:10
...
ValueError: invalid literal for int() with base 10: ''
... line 1, in <module>
ValueError: invalid literal for int() with base 10: '55063.000000'
Got me here...
>>> int(float('55063.000000'))
55063.0
Has to be used!
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How to atomically delete keys matching a pattern using Redis
...
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717
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Install go with brew, and running the gotour
... Custodio
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answered Dec 30 '14 at 17:36
user2562923user2562923
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