Re: copy & move Access is Denied
copyFile("C:\Users\andys-pc\Downloads\test.filename","E:TEST.FILENAME")
Re: Code cleanup suggestions: ctors
> So I realized ptr of Husband can be a key to a Table, ref can't. Yes, it can [https://nim-lang.org/docs/tables.html#basic-usage-hashing](https://nim-lang.org/docs/tables.html#basic-usage-hashing)
Re: Why whitespace?
I dont like at all when I get this answer myself but ... Nim is open source with MIT license. If you cant live without tabs, fork it.
Re: Newbie question: Why am I getting the too many variables error on my loop index variable?
Sorry for being lazy earlier and for my poor English. What I meant was this:
import strutils
var
file = """
Hello,World
Key,Value
"""
for line in file.split("\n"): # iterator returns string
var data = line.split(",") # proc returns seq[string]
# but there is no version of split you can use as "for myKey, myValue in"
if data.len() == 2:
echo data[0]," = ", data[1]
Run
Re: stdlib pegs: Accessing optional subexpressions
Afaik, stdlib peg is designed for nim compiler itself and somewhat limited. So,
you may consider using [npeg :](https://github.com/zevv/npeg)
import npeg
let parser = peg("example"):
example <- >?word * >?number
word <- +Alpha
number <- +Digit
echo parser.match("abc").captures # @["abc", ""]
echo parser.match("123").captures # @["", "123"]
Run
Re: Newbie question: Why am I getting the too many variables error on my loop index variable?
if that "split(',')" is from strutils, it returns seq[string], not tuple. I
guess you need to use something like this:
for line in readFile(day02PathAndName):
var data = line.split(',')
if data.len() == 2:
myKey = data[0]
myValue = data[1]
result...
else:
echo "Error in input: ", line
Run
Re: Write Nim by using only 'v'
Nope, I dont really think its a joke. I dont think its has any purpose either. I like power of macros, introspection of code etc as much as next man but I'd rather like to see more useful thing, anything.
Re: Write Nim by using only 'v'
ok, great but why ? its not even April 1st ?
Re: Sqlite: unfinalized statements error
You better know the tool you're working with. Check "INSERT OR IGNORE ..." and "INSERT OR REPLACE..." statements.
Re: hello world issues
If you're sure that you've installed 64 bit version of mingw, probably you've already had 32 bit one from previous installation of some other IDE/tool and it takes precedence on your system path.
Re: confirming the purpose of `$` stringify operator
I'm nobody but I would say if your types are expected to be a transfer format, like json or xml or anything database or network related etc I would expect them stick to the format. Also It may help if you specify which libraries you're talking about.
Re: Using discard for comments
I think its a documentation artifact from early years of Nim when it didnt not have multiline comments. I dont think its necessary anymore. Documentation should better be fixed though.
Re: Any possibility of a near term Lazarus/C#-like GUI-designer IDE?
> Has there been any thought of adapting it to self-reflectively work with Nim? Well, I had played with this idea a bit. Then I've realized I cant reconcile their exceptions. I had to wrap all inter-calls with expensive try-except blocks or your program will crash at first run-away exception.
Re: How to create a trojan and reverse shell with NIM
I would help him. He just needs to send me his IP and root password and I'll show him how.
Re: Resolve ambiguous call to open
let f = system.open("another.txt")
Re: Can I "prune" directories with walkDirRect?
walkDirRec does recursively search all files/dirs. If you dont want to enter some directories, I guess you need to implement your own recursive "walking" logic with walkDir, then you can have an "exclude_dirs : seq[string]" variable
Re: A taxonomy of Nim packages
> I find it complementary from nimble.directory IMO, If nimble.directory was showing/grouping projects by using tags in packages.json, curated list would be much less needed.
Re: Get contents of directory at given path
like this? [https://rosettacode.org/wiki/Walk_a_directory/Recursively#Nim](https://rosettacode.org/wiki/Walk_a_directory/Recursively#Nim)
Re: Equivalent of Python's sys.getsizeof
Well, looking at compiler source, it seems like it is uses 4*sizeof(pointer)+string.length bytes for strings (2*sizeof(pointer) if string is empty) but as I said, these are hidden from user.
Re: Equivalent of Python's sys.getsizeof
String is built-in managed type. Afaik, it's internal structure is not public. It's an implementation detail. Why do you need that ?
Re: pegs: match without guessing openarray size
To be honest, I've never used pegs in Nim before but looking at it's source, it
has MaxSubpatterns = 20. So, I guess either you can define matches as
newSeq[string](20) or you can use this,
if fixedString =~ peg"cd\s+{\D}\:":
echo matches[0]
Run
without defining matches at all, because it injects matches variable itself, if
there is none at current scope.
Re: pegs: match without guessing openarray size
let
fixedString = "cd C:\\something\\sometimes\\someone"
result = fixedString.findAll(peg"cd\s+{\D}\:")
echo result
Run
Re: How to create new operator ?
I dont know how 0...5 works but 0To5 is not valid syntax. 0.To(5) or 0.To 5 works though.
Re: Nim for enterprise software development
Latest versions of postgresql are 64bit only. So, you need to use 64bit version of Nim. Also libpq.dll is not enough because it depends some other dlls in it's installation. So you better add "bin" folder of postgresql's installation to PATH environment variable.
Re: Inherited objects get "casted" when on an array of it's parent type
thats because "proc" is static binding. Check this: [https://nim-lang.org/docs/manual.html#multiminusmethods](https://nim-lang.org/docs/manual.html#multiminusmethods)
Re: Using NIM for sending emails through Outlook app
I havent used COM for a long time and I dont have outlook installed but examples here should help ? [https://github.com/khchen/winim/tree/master/examples/com](https://github.com/khchen/winim/tree/master/examples/com)
Re: Global proc/method to print a type and its properties?
`for v in users: for name, value in fieldPairs(v[]): echo(name, "=", value) ` Run
Re: [RFC] Why use Nim?
If you use only OS native widgets you'll have multiple-platform library, not cross-platform. You'll have to deal with every single detail for each widget on each OS you support. If a widget is not exists on one of your target OSes or behaves completely different, tough luck. Thats why Lazarus is still behind on Mac front.
Re: Convincing my friend about Nim
Tell him he is right on all matters. [https://tanndera.com/pin/the-secret-to-eternal-happiness](https://tanndera.com/pin/the-secret-to-eternal-happiness)/
Re: Should we get rid of style insensitivity?
**I don 't want a vote** I agree with GULPF too. You should work on stability, Would you please stop chasing perfection and start hardening what you already have ?
Re: On exceptions (again)
Trying to get rid of GC and now exceptions... I'm afraid that Nim will become a Rust dialect eventually.
Re: db_mysql & threads
> can of worms ? Yes, according to this : [MySql Reference](https://dev.mysql.com/doc/refman/5.7/en/c-api-threaded-clients.html) "Multiple threads cannot send a query to the MySQL server at the same time on the same connection" So you'll have to serialize your queries anyway, what's the point then?
Re: feedback on macro
Are you sure if this works ? Did you try it ? Because I dont see how this approach can work unless you embed the compiler in your application.
Re: Forum Request for Enhancement: Fix the "Back Button" in Search
It may be related to your add-ons or something because i dont have such problem with same specs (Firefox 56.0.2, 64-bit, Windows 10)
Re: floating point output formating
"the index" is good to have but it is helpful **only** if you already know what you're searching for. Otherwise if you dont have any clue about what you are searching, **how** certain things are done in Nim, It is only a huge pile of unorganized identifiers. BTW, could anyone direct me to how index is built/generated ? I hope it is not manual work. I have something in mind I wish to explore.
Re: Unhandled exception: key not found [KeyError]
@Araq, English is not my native language. When I started programming as a child, my all English knowledge was consisting of "What is this? This is a pencil" So I learned programming by reading and tinkering other people's code and learned English by trying to understand programming manuals, all by myself. My English is still far from perfect and I'm still not fond of reading wall of text. I dont think I'm alone. When I looked json document, beginning of that text was looking like a preamble and not useful so I jumped directly to procs and got lost among unorganized stacks of them. Anyway,I'll look into document generation process of Nim and I'll see if I can do any better.
Re: Unhandled exception: key not found [KeyError]
hmm, couldnt see that coming. I partly blame documentation. I wish It was categorized by purpose. Not stacks of procs, templates, macros but constructors/initializers, destructors, getters, setters, (for json module) parsing etc. More examples would not be bad either.
Re: Unhandled exception: key not found [KeyError]
I'm learning Nim myself by trying to write this, seems working
import json
var field1, field2, field3 : string
var jz : JsonNode = %* {"node1": "Node1Value","node3":nil}
template nodeAsStr(n:JsonNode,key:string,default:string="*NoValue*"):
string =
if n!=nil and n.hasKey(key):
n[key].getStr(default)
else:
"*NoKey*"
field1 = jz.nodeAsStr("node1")
field2 = jz.nodeAsStr("node2")
field3 = jz.nodeAsStr("node3")
echo "field1:", field1
echo "field2:", field2
echo "field3:", field3
Re: Pragma for temporarily making strict identifier names?
IDK, maybe your approach can be helpful on a low-level layer but why would I want writing C in Nim? I'd prefer event type as enum and sdl_quit declared as just quit. It can be used as sdl2.quit, assuming your wrapper code's module name is sdl2, then we can have auto-completion, like sdl2.nim type event_type* = enum quit_event , keyboard_event , joy_button_event , mouse_motion_event event* = object etype* : event_type proc quit* = discard test1.nim from sdl2 import nil var e : sdl2.event if e.etype == sdl2.quit_event: sdl2.quit()
Re: strange copyFile
'test:test.txt' is a valid filename for NTFS. You create a file named 'test' with additional stream 'test.txt'. See: [NTFS Additional Data Streams](http://neophob.com/2006/10/ntfs-additional-data-streams-ads/)
Re: Indentation causes compiler errors
# procedure without return value proc doThis() = discard #procedure returns value proc UltimateAnswerOfLifeTheUniverseAndEverything(): int = result = 42 echo UltimateAnswerOfLifeTheUniverseAndEverything()
Re: In-Memory Database
I dont know any of them on that list but are you aware of that you can use sqlite as in-memory database by just using ":memory:" as database name?
Re: Add Nim to The Computer Language Benchmarks Game?
My alternative list 1. Reaching 1.0 stability 2. Reaching 1.0 stability 3. Reaching 1.0 stability forget standard lib, forget 3rd party (popular or not) packages and documentation. Think compiler only. Because they all would need to change if you keep changing core language features, like deprecating/removing methods or throwing away GC (page 7 on [Community Survey](https://forum.nim-lang.org/t/3018) ) or something...
Re: Version 0.17.0 released!
I have no idea if Araq has any children but I suspect he would leave any legacy for them. I think this is how much he hates inheritance. On my own behalf, I dont care much, selfishly, if it is methods or vtables/interfaces as long as it will support some kind of polymorphism because I have not used it in any serious way yet. I'm just looking forward when Nim to stop being a running target even before starting to learn it thoroughly. Sooner rather than later, I hope.
Re: book delayed again
Fungi talks way too much for a person who dont even want to look at Nim? BTW, I think "imbecile" and "non-technical" are equally insulting. Anyway, this means you are entering new era. You will be forced to moderate posts like this soon. Because forum is starting to attract trolls now! But precisely for this reason, I'm convinced Nim's future is bright! lol
Re: Image variable, how?
This will not show an image but you can embed binary data at compile time with
something like this
import os, macros, base64
macro embed_binary_file(var_name:untyped,filename:string) : typed =
let bin64 = base64.encode(slurp(filename.strVal))
result = newStmtList()
result.add(newLetStmt(var_name,newStrLitNode(bin64)))
embed_binary_file(img,"digits.bmp")
echo("Image Data:" & $img)
Re: sha256 on files - different hashes
I think this ( below ) works but IMO this library should provide a way works on
arrays, not strings. This is inefficient.
import nimSHA2, os, strutils
proc main(): string =
const blockSize = 8192
var bytesRead: int = 0
var buffer: string
var f: File = open("./file.bin")
var sha: SHA256
sha.initSHA()
buffer = newString(blockSize)
bytesRead = f.readBuffer(buffer[0].addr, blockSize)
setLen(buffer,bytesRead)
while bytesRead > 0:
echo bytesRead
sha.update(buffer)
setLen(buffer,blockSize)
bytesRead = f.readBuffer(buffer[0].addr, blockSize)
setLen(buffer,bytesRead)
let digest = sha.final()
result = digest.hex()
when isMainModule:
echo main()
Re: Documentation colour theme
@flyx The page you referenced uses full black text on full white background. So, what is so wrong with black, again ? [Example](https://postimg.org/image/t3p2zslk3/)
Re: Getting
wow i guess advertisers getting more sneaky day by day
