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How to randomly sort (scramble) an array in Ruby?
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Built in now:
[1,2,3,4].shuffle => [2, 1, 3, 4]
[1,2,3,4].shuffle => [1, 3, 2, 4]
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Accessing the index in 'for' loops?
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edited Sep 17 '16 at 10:13
Peter Mortensen
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How to pass optional arguments to a method in C++?
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145
Here is an example of passing mode as optional parameter
void myfunc(int blah, int mode = 0)...
Repeat each row of data.frame the number of times specified in a column
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175
Here's one solution:
df.expanded <- df[rep(row.names(df), df$freq), 1:2]
Result:
va...
How to get a random number between a float range?
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Use random.uniform(a, b):
>>> random.uniform(1.5, 1.9)
1.8733202628557872
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How do you find the last day of the month? [duplicate]
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241
How about using DaysInMonth:
DateTime createDate = new DateTime (year, month,
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Boolean Field in Oracle
...nd other programming environments,
it's better to select 0 for false and 1 for true so it can work
correctly with the getBoolean and setBoolean functions.
Basically they advocate method number 2, for efficiency's sake, using
values of 0/1 (because of interoperability with JDBC's getBoolean(...
How to convert list of key-value tuples into dictionary?
...p and zip it. ValueError: dictionary update sequence element #0 has length 1916; 2 is required
THAT is your actual question.
The answer is that the elements of your list are not what you think they are. If you type myList[0] you will find that the first element of your list is not a two-tuple, e....
Is there a way to check if int is legal enum in C#?
... page:
using System;
[Flags] public enum PetType
{
None = 0, Dog = 1, Cat = 2, Rodent = 4, Bird = 8, Reptile = 16, Other = 32
};
public class Example
{
public static void Main()
{
object value;
// Call IsDefined with underlying integral value of member.
value = ...