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I have a table called languages with 4 fields, label, description, locale, and is_active.
label and locale are two different unique fiel...
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I have a question regarding server termination vs server exit.
I would appreciate that this question be considered in light of the below...
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I’ve been working through Programming Elixir, the second half of Chapter 20 pertains to releases and hotcode reloading.
One of the first...
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In the context of iex…
…yields no error
IO.inspect :a do
5
end
#==> :a
..yields an error
:a do
5
end
error: syntax error before d...
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I’ve been working my way through the programming elixir book, and I wanted to ascertain whether or not the way I answer a particular ques...
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Regarding the following question on Nodes…
Exercise: Nodes-4
The ticker process in this chapter is a central server that sends events ...
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I’ve been working my way through the Protocols chapter of Programming Elixir, and I came across this exercise in the last section of the ...
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Trending Over Three Years
I have a list say
x = ["23gh", "56kh", "97mh"]
I would like to pass each element to Val in each iteration.
Say, in iteration 1 -------...
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Hi everyone, this is my first time writing regular expression. I have a regular expression that helps in validating domain names. I think...
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This is my migration. And it is one of the tables in my database. I no longer need this table. Can I know what is the command I use to re...
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I read the “Programming Elixir” book, here is quote from the book:
At some point, the old object-orientation neurons still active in th...
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Hi,
I’ve started learning Elixir by reading the book Programming Elixir and I’ve got one question (at this moment :smile: ). What is the...
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While starting a genserver process, I want to give it a name. As you can see in the following example pid is right now acting as a name f...
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I am trying to send messages to all local nodes periodically about a leader selection. I am using 4 nodes currently
[:"n1@127.0.0.1", :...
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I have a list of maps.
post_a =
%{
post_body_size: 4,
date: ~D[2021-06-05]
}
post_b =
%{
post_body_size: 4,
date: ~D[2021-06-04]
}
pos...
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Hi,
I am having three functions and the data inputs to only one of them. Lets say i have a function A having two parameters a and b. The...
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I have a file called favicon.ico. I would like to know what code goes into this file or any sample code would be appreciated. And how to ...
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Hi,
I’m trying to hash a random number but can’t make it work…
num = Enum.random(1..9999)
hashed_num = :crypto.hash(:sha256, num)
I’m ...
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The following is my solution to one of the exercises of “Programming Elixir 1.2” and I wondered if it is considered an anitpattern to hav...
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I get the following intermittent test failure errors for some queries.
** (DBConnection.ConnectionError) connection not available and r...
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I understand pattern matching in a very basic sense.
So for example I understand perfectly well what this code does
%{william: age} = ...
New
Hi
I am trying sorted index in elixir.
My migration has the following index
create index(:posts, ["date DESC"])
When doing sorted ind...
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