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Random shuffling of an array
....current();
for (int i = ar.length - 1; i > 0; i--)
{
int index = rnd.nextInt(i + 1);
// Simple swap
int a = ar[index];
ar[index] = ar[i];
ar[i] = a;
}
}
}
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css3 drop shadow under another div, z-index not working [duplicate]
...blem is that the "middle" div is covering the drop shadow. i tried using z-index to put the header div about the middle div, but it's not working (the shadow is still being covered). when i put a break between the divs, i can see the shadow and therefore i know that part of the code is working prope...
How to get value at a specific index of array In JavaScript?
I have an array and simply want to get the element at index 1.
5 Answers
5
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Loop through list with both content and index [duplicate]
... for me to loop through a python list to get both the contents and their indexes. What I usually do is the following:
6 A...
How to Remove Array Element and Then Re-Index Array?
... I want to modify like below. I want to remove element (elements) of it by index and then re-index array. Is it possible?
9...
Is there a REAL performance difference between INT and VARCHAR primary keys?
...table, with values, say, frpom 1 to 50, but you did NOT put another unique index or key on the state postal code, (and, in my opinion, on the state name as well), then what's to stop someone from entering two rows with different surrogate key values but with the same postal code and/or state name? ...
Add a reference column migration in Rails 4
...t; ActiveRecord::Migration
def change
add_reference :uploads, :user, index: true
end
end
Then, run the migration using rake db:migrate.
This migration will take care of adding a new column named user_id to uploads table (referencing id column in users table), PLUS it will also add an index...
In an array of objects, fastest way to find the index of an object whose attributes match a search
...field' attribute:
var elementPos = array.map(function(x) {return x.id; }).indexOf(idYourAreLookingFor);
var objectFound = array[elementPos];
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What is the most efficient way to loop through dataframes with pandas? [duplicate]
...s of pandas now include a built-in function for iterating over rows.
for index, row in df.iterrows():
# do some logic here
Or, if you want it faster use itertuples()
But, unutbu's suggestion to use numpy functions to avoid iterating over rows will produce the fastest code.
...
Is it possible to make an ASP.NET MVC route based on a subdomain?
...)
{
var url = httpContext.Request.Headers["HOST"];
var index = url.IndexOf(".");
if (index < 0)
return null;
var subDomain = url.Substring(0, index);
if (subDomain == "user1")
{
var routeData = new RouteData(this, new ...