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Why do people use Heroku when AWS is present? What distinguishes Heroku from AWS? [closed]
...rchitecture, then choose Heroku.
If you want to focus on the architecture and to be able to use different web servers, then choose AWS. AWS is more time-consuming based on what service/product you choose, but can be worth it. AWS also comes with many plugin services and products.
Heroku
Platfo...
String concatenation does not work in SQLite
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Try using || in place of +
select locationname || '<p>' from location;
From SQLite documentation:
The || operator is "concatenate" - it joins together the two strings of its operands.
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Local file access with JavaScript
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If the user selects a file via <input type="file">, you can read and process that file using the File API.
Reading or writing arbitrary files is not allowed by design. It's a violation of the sandbox. From Wikipedia -> Javascri...
Adding local .aar files to Gradle build using “flatDirs” is not working
... to why my next button is grayed out on the Create New Module dialog after selecting Import JAR/AAR Package?
– Kevin Crain
Nov 9 '16 at 8:50
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Get element inside element by class and ID - JavaScript
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Well, first you need to select the elements with a function like getElementById.
var targetDiv = document.getElementById("foo").getElementsByClassName("bar")[0];
getElementById only returns one node, but getElementsByClassName returns a node list...
Ruby Array find_first object?
...; 2
If you wanted to return all values where block returns true then use select
[1,2,3,11,34].select(&:even?) #=> [2, 34]
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LINQ Orderby Descending Query
...(x=>x.Delivery)
where !t.Items && t.DeliverySelection
orderby t.Delivery.SubmissionDate descending
select t;
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Group by multiple columns in dplyr, using string vector input
...cumentation here). This lets you use the same functions you would use with select, like so:
data = data.frame(
asihckhdoydkhxiydfgfTgdsx = sample(LETTERS[1:3], 100, replace=TRUE),
a30mvxigxkghc5cdsvxvyv0ja = sample(LETTERS[1:3], 100, replace=TRUE),
value = rnorm(100)
)
# get the column...
Accessing the index in 'for' loops?
...g enumerate, I switched to this approach to avoid having to write logic to select which object to enumerate.
– adg
Mar 31 '17 at 23:18
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How do I run multiple instances of Android Studio
...ultiple instances of Android Studio? A second instance is launched if you select "File\New Project", but "File\Open" and "File\Reopen" does not create a second instance.
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