Re: can not run nimedit
Hmm, I can't tell from here what the problem is, aside from the fact that it is a segmentation fault. Does it seem to always crash in the same procedure? If so, I suspect it is a fixable bug. Keep in mind that `nimedit` isn't as well supported as other IDEs.
can not run nimedit
I compiled nimedit [https://github.com/Araq/nimedit](https://github.com/Araq/nimedit). added dlls: sdl2.dll, sdl2_ttf.dll from this site: [https://www.libsdl.org/download-2.0.php](https://www.libsdl.org/download-2.0.php). nimedit does not works. when I start nimedit, it writes Tracebar list(most recent call list) nimedit.nim(1203) nimedit nimedit.nim(1127) mainProc nimedit.nim(547) loadTheme nimscriptsupport.nim(127) loadTheme nimscriptsupport.nim(73) getGlobal nimscriptsupport.nim(37) getGlobal SIGSEV:illegal slotage access. (attempt to read from nil?) Run why? please help me
how run aporia on windows
hello, i want to use aporia for programming on nim, but aporia does not starts. [https://github.com/nim-lang/Aporia#dependencies](https://github.com/nim-lang/Aporia#dependencies). i did all by following manual, but aporia writes :\Users\tbutton\Desktop\Aporia-master>aporia could not load: libglib-2.0-0.dll Run no one libglib-2.0-0.dll from web does not works. where i can find libglib-2.0-0.dll for aporia, for programs compiled with nim?
Re: Is there a way to make kind of like an override named block?
Now with string.
import macros
import tables
var overrides {.compiletime.} = initTable[string,string]()
macro override(aStr : static[string], b: untyped) : untyped =
var x = genSym(nskTemplate)
overrides[aStr] = x.strVal
result = quote do:
template `x`() : untyped =
`b`
macro section(aStr : static[string], b : untyped) : untyped =
if aStr in overrides:
let templateName = ident(overrides[aStr])
result = quote do:
`templateName`()
else:
result = b
override "redbox":
echo "Hello"
section "redbox":
echo "Goodbye"
section "whatever":
echo "Hello World!"
Run
Re: Is there a way to make kind of like an override named block?
Do you know if I can make it work with strings? Some how to turn string into a
symbol in a template?
template override(a: string, b : untyped) : untyped =
template {a cast from string}() : untyped =
echo a
b
template section(a, b : untyped) : untyped =
when compiles({a cast from string}()):
a()
else:
echo a
b
override "redbox":
echo "Hello"
section "redbox":
echo "Goodbye"
section "whatever":
echo "Hello World!"
Run
Mix of varags & seq confusion
Hello people, new user of nim here and I am already excited! I have the following scenario, for test purposes, and I think I'm missing something here, or, in other words, how to make the compiler get what I mean? proc test(names:varargs[seq[string]]) = discard proc test(names:varargs[string]) = discard test "hello", "world" # works test @["hello"], @["world"] # works test @["hello", "world"] # compiler error, I get an "ambiguous call" Run In my eyes this is not an "ambiguous call", since this is clearly a seq and not a varags. And this is obvious for me, since the two types are not interchangeable. So what I am missing here?
Re: Jester memory usage strangeness
Ah, probably your FD limit is high, 0.19.4 allocates a big seq upfront in order to never need reallocations, devel on Linux does not do this anymore.
Re: Unexpected async behaviour?
It's not a bug, it's a feature :) You probably missed [this](https://nim-lang.github.io/Nim/manual.html#closures-creating-closures-in-loops) part of the manual where it is explained that closures capture variable by reference. In your example the inner `serve` captures `c` by reference and, as a result, you're always listening on the last accepted connection. To solve this problem you can just create a local copy of `c` and use it.
Re: Jester memory usage strangeness
If it's fixed on devel, it's possible to do a git bisect to track what fixed the issue. There are months of commits though and several are a pain during bisections because you need to rebootstrap Nim (not nil changes from August especially) so it might not be worth it.
Re: Fuzzy matching on table keys
What mashigan wrote may well be best suited to your exact purpose. Another possibility at least worth a shout out is `collections/critbits` which implements an efficient `keysWithPrefix`. For more fuzzy still than prefix matching, you could also do some kind of efficient edit distance-based thing, but data-structures to (attempt to) optimize that are complicated. (There is `std/editdistance`, though).
Re: Jester memory usage strangeness
Hi Araq,
1. Thank you for this. I had no idea. Is there a place where I can find those
information? Sadly, didn't changed the problem.
2. My question was also: _how and where_ I report a problem that shows only
on some machines? (I have two VPS and both has the same memory usage).
I also tried asynchttpserver with similar results (~20MB vs ~500kB):
import asynchttpserver, asyncdispatch
var server = newAsyncHttpServer()
proc cb(req: Request) {.async.} =
await req.respond(Http200, "Hello World")
waitFor server.serve(Port(8080), cb)
Run
Lastly I switched to nim devel and everything is okay. Memory usage is same on
laptop and server. So imho there's something wrong with 0.19.x and I'd love to
help, just don't know how!
Re: Fuzzy matching on table keys
Add `hash` function and equality operator `==` for custom key.
import tables, hashes
type
Fn = proc (args: varargs[string]): int
FnSignature = tuple
name: string
arity: int
argTypes: seq[string]
proc hash(fns: FnSignature): Hash = fns[0].hash
proc `==`(a, b: FnSignature): bool = a[0] == b[0]
var signatures = newTable[FnSignature, Fn]()
signatures.add(("print", 1, @["any"])) do (args: varargs[string]) -> int:
discard
echo signatures[("print", 1, @["string"])]("whatev")
Run
Re: Newbie question about reading asynchronous text file line by line
The problem is that there seems to be no check for EOF.
This here works:
import asyncdispatch, asyncfile, os
proc main() {.async.} =
var filename = "test.txt"
var file = openAsync(filename, fmRead)
let fileSize = file.getFileSize()
while file.getFilePos() < fileSize:
let line = await file.readLine()
if line.len == 0: break
echo line
file.close()
waitFor main()
Run
Fuzzy matching on table keys
Hello,
I want to perform fuzzy matching on table keys. What I mean by that, is:
import tables
type
Fn = proc (args: varargs[string]): int
FnSignature = tuple
name: string
arity: int
argTypes: seq[string]
var signatures = newTable[FnSignature, Fn]()
signatures.add(("print", 1, @["any"])) do (args: varargs[string]) -> int:
discard
echo signatures[("print", 1, @["string"])] # should return the first added
element, because ``any`` describes any type
Run
>From what I know about hash tables, it's not as simple as adding an equality
>operator overload to `FnSignature`. How do I achieve what I'm talking about?
Re: Newbie question about reading asynchronous text file line by line
I have created an issue [10641](https://github.com/nim-lang/Nim/issues/10641)
Re: "nim cpp -d:release --noCppExceptions" fails
@Araq Thank you for your advice. I have created an issue [10652](https://github.com/nim-lang/Nim/issues/10652).
Re: Screencast Series Ideas
> This is a big issue that I've been thinking about. I have an okay-ish > tabletop mic, One think you could/should do is put a towel underneath your mic-stand. It reduces vibrations, killing some loud unpleasant keyboard sounds.
Re: What are the files in .nimble/bin
Try opening these files with a text editor, they're scripts.
Re: The portable way to find nimbase.h or system.nim location
Good. :)
Re: Jester memory usage strangeness
1. Compiling with `--opt:speed --stackTraces:off` is the better idea for servers. 2. There are no known memory leaks in Nim's stdlib or GC for the 0.19.x series, so I'm afraid you need to report a program that allows us to reproduce the issue.
