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How to print struct variables in console?
...2B))
That would print:
{"page":1,"fruits":["apple","peach","pear"]}
If you don't have any instance, then you need to use reflection to display the name of the field of a given struct, as in this example.
type T struct {
A int
B string
}
t := T{23, "skidoo"}
s := reflect.ValueOf(&...
Multi-line commands in GHCi
...xample, the following is sufficient:
Prelude> let addTwo x y = x + y
If you really want a definition with a type signature, or your definition spans over multiple lines, you can do this in ghci:
Prelude> :{
Prelude| let addTwo :: Int -> Int -> Int
Prelude| addTwo x y = x + y
Pre...
What's the difference between array_merge and array + array?
A fairly simple question. What's the difference between:
9 Answers
9
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How to test which port MySQL is running on and whether it can be connected to?
... port, do this:
netstat -tln
You should see a line that looks like this if mysql is indeed listening on that port.
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
Port 3306 is MySql's default port.
To connect, you just have to use whatever client you r...
ActiveRecord, has_many :through, and Polymorphic Associations
...
There is a known issue with Rails 3.1.1 that breaks this functionality. If you are having this problem first try upgrading, it's been fixed in 3.1.2
You're so close. The problem is you're misusing the :source option. :source should points to the polymorphic belongs_to relationship. Then all you ...
How do I disable directory browsing?
...t .htaccess might by turned off. Please check the AllowOverride Directive. If it's set to None, then .htaccess is turned off. You can turn it on by setting AllowOverride All. To be more precise, All means all Apache Directives.
– Julian
May 31 '18 at 9:59
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CSS opacity only to background color, not the text on it? [duplicate]
... Yes, using rgba() works in most cases, but it would be nice if there was a "background-opacity:" property in css, because when the "background-color:" is set dynamically (on the fly) as an input to a settings function in an admin appearance panel, which has been coded to use only rgb(...
Clicking a button within a form causes page refresh
...ve dropped a breakpoint in the function and it is triggering my function. If I do any of the following, it stops:
11 Answer...
Why are my JavaScript function names clashing?
...ements forbid this.
This article by @kangax does a fantastic job in demystifying functions in javascript
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How to set DOM element as the first child?
...should be the first child of E. What's the trick, how to do it? Method unshift doesn't work because E is an object, not array.
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