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Leading zeros for Int in Swift
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703
Assuming you want a field length of 2 with leading zeros you'd do this:
import Foundation
for ...
Returning first x items from array
...nittlknittl
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1
...
How to return multiple lines JSX in another return statement in React?
... the tags as function calls (see docs). Then the first one becomes:
{[1,2,3].map(function (n) {
return React.DOM.p(...);
})}
And the second one:
{[1,2,3].map(function (n) {
return (
React.DOM.h3(...)
React.DOM.p(...)
)
})}
It should now be clear that the second snippet doesn't re...
cartesian product in pandas
...import DataFrame, merge
df1 = DataFrame({'key':[1,1], 'col1':[1,2],'col2':[3,4]})
df2 = DataFrame({'key':[1,1], 'col3':[5,6]})
merge(df1, df2,on='key')[['col1', 'col2', 'col3']]
Output:
col1 col2 col3
0 1 3 5
1 1 3 6
2 2 4 5
3 2 4 6
See here...
Speed up the loop operation in R
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438
Biggest problem and root of ineffectiveness is indexing data.frame, I mean all this lines where...
What is the easiest way to push an element to the beginning of the array?
...
390
What about using the unshift method?
ary.unshift(obj, ...) → ary
Prepends objects to t...
How to convert ‘false’ to 0 and ‘true’ to 1 in Python
...
answered Dec 30 '13 at 13:46
Martijn Pieters♦Martijn Pieters
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How to implement an ordered, default dict? [duplicate]
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edited Aug 23 '14 at 20:47
Martin Thoma
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What does the clearfix class do in css? [duplicate]
...
3 Answers
3
Active
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Comparing two byte arrays in .NET
...l method.
using System;
using System.Linq;
...
var a1 = new int[] { 1, 2, 3};
var a2 = new int[] { 1, 2, 3};
var a3 = new int[] { 1, 2, 4};
var x = a1.SequenceEqual(a2); // true
var y = a1.SequenceEqual(a3); // false
If you can't use .NET 3.5 for some reason, your method is OK.
Compiler\run-time ...