seq Questions
2
I have a Windows Service that processes long running tasks and never shuts down unless forcefully done so (i.e. computer shutdown). I would like to keep the same Serilog instance alive the whole ti...
Layer asked 26/10, 2017 at 16:34
3
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I'm an experienced Pandas user and am having trouble plugging values from my R frame into a function.
The following function works with hard coded values
>seq.Date(as.Date('2018-01-01'), as.Da...
4
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A quick question that may be more of a rant (but I hope to be enlightened instead).
In F# a string is compatible with Seq such that "abcd" |> Seq.map f will work on a string.
This is a brilliant ...
1
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I am wanting to be able to sum multiple fields of a sequence. I don't know how to do this without iterating over the sequence multiple times. My perception is that this is inefficient. Is there a c...
1
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From the docs, I know that Nim arrays have a fixed length determined at compile time, whereas seqs have a variable length.
I notice that seqs have more builtin tools. For example, in the sequtils ...
1
Why can't I tail the result of a tail? I can call head on the sequence tail returns (and other variations), but a tail on a tail doesn't work (in 2017.10):
> my $list = <a b c d e f g h i j&...
3
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I want to produce such file (cartesian product of [1-3]X[1-5]):
1 1
1 2
1 3
1 4
1 5
2 1
2 2
2 3
2 4
2 5
3 1
3 2
3 3
3 4
3 5
I can do this using nested loop like:
for i in $(seq 3)
do
for j in...
2
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I'm having an issue where a query that's indexed refuses to use the index, because it's not selective enough (let's say 60 out of 130 million rows meet the condition) and so decides to use a seqsca...
Pardew asked 17/10, 2017 at 22:46
7
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Is it possible to do something like this:
start=1
end=10
echo {$start..$end}
# Ouput: {1..10}
# Expected: 1 2 3 ... 10 (echo {1..10})
2
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Given an initial date, I want to generate a sequence of dates with monthly intervals, ensuring every element has the same day as the initial date or the last day of the month in case the same day w...
2
In Scala Collection documentation, there is some clue to this question:
Trait Seq has two subtraits LinearSeq, and IndexedSeq. These do not add any new operations, but each offers different perf...
Lonee asked 18/3, 2016 at 18:22
7
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I want to generate missing values in a vector so that the missing value are grouped in sequences, to simulate periods of missing data of different length.
Let's say I have a vector of 10 000 value...
Sandusky asked 16/6, 2017 at 13:23
3
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Without Future, that's how I combine all smaller Seq into one big Seq with a flatmap
category.getCategoryUrlKey(id: Int):Seq[Meta] // main method
val appDomains: Seq[Int]
val categories:Seq[Meta]...
Antisepsis asked 16/6, 2017 at 9:38
4
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I am trying to generate a vector containing decreasing sequences of increasing length, such as 1, 2,1, 3,2,1, 4,3,2,1, 5,4,3,2,1, i.e.
c(1, 2:1, 3:1, 4:1, 5:1)
I tried to use a loop for this, but I...
2
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My question is when entering Seq. why is there no Seq.tail function?
In this code that does not convert a sequence to a list, there is no Seq.tail function available in the recursive function. Is ...
Krissykrista asked 20/3, 2017 at 19:15
4
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I would like to create a sequence from two numbers, such that the occurrence of one of the numbers decreases (from n_1 to 1) while for the other number the occurrences are fixed at n_2.
I've been...
2
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I would like to log any json into serilog properties. I have read a lot about serilog and json, but it is a structured json logging, with a message template. So instead of logging this Log.Info(&qu...
1
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6
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The seq function in R would give me a sequence from x to y with a constant step m:
seq(x, y, m)
E.g. seq(1,9,2) = c(1,3,5,7,9).
What would be the most elegant way to get a sequence from x to y ...
3
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New F# developer, long time C# developer. As an exercise in learning F#, I'm working my way through Eric Lippert's series on graph coloring translating from his C# to F#. I'm currently working on p...
1
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I read that using seq_along() allows to handle the empty case much better, but this concept is not so clear in my mind.
For example, I have this data frame:
df
a b c d
1 1.2767671 0.133558438 1...
3
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Perl 6 has lazy lists, but it also has unbounded Range objects. Which one should you choose for counting up by whole numbers?
And there's unbounded Range with two dots:
0 .. *
There's the Seq (...
2
I am using Visual Studio 2012, and the function that calls Console.ReadLine() will not execute
let inSeq = readlines ()
in this simple program
open System
open System.Collections.Generic
open Sy...
2
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I am working with scala play 2 with slick.
I have a Seq like
val customerList: Seq[CustomerDetail] = Seq(CustomerDetail("id", "status", "name"))
I want to add a CustomerDetail item in this cust...
2
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I want:
01 02 03 ... 10, 11, 12 ... 97, 98, 99
I have tried using following:
seq("01":"19") # Doesn't help
paste0("0",seq("01":"19")) # Doesn't help
Please suggest something!
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