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I typed my first code in rust. The helloworld. But I got an error when I tried to run it.
fn main() {
println!("Hello world");
}
I tried to run using './hellworld.rs'
But it showed,
syntax error near unexpected token `('
`fn main() {'
I was using powershell. But used the wrong command ./helloworld.rs
Instead I tried ./helloworld and ./helloworld.exe. Both worked.
Related
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Closed 2 days ago.
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Rendered fewer hooks than expected. This may be caused by an accidental early return statement.
When submitting a form using react-toolkits and react-hooks it causing me an error?
There something wrong on this file Login.jsx file and happened is not
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I'm trying to build a login page using Golang, but I can't assign specific characters to the form values for username, email, and password.
Found this snippet when I searched for a solution:
if regexp.MustCompile(`^([A-Za-z0-9]{5,})+$`, r.FormValue("username")) == false{
pageinfo.username = "There are disallowed symbols in the field. The allowed characters are: a-zA-Z0-9"
}
The visitor should have shown the pageinfo.username message if he used different characters, but a problem appears:
./user.go:43:54: too many arguments in ca ll to regexp.MustCompile
have (string, string)
want (string)
./user.go:43:76: invalid operation: regexp.MustCompile(`^([A-Za-z0-9]{5,})+$`, r.FormValue("username")) false (mismatched type == s *regexp.Regexp and untyped bool)
make: *** [Makefile:6: main] Error 2
exit status 2
Is there another way to do that?
Note: I am new to using Golang.
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As the title say, I have a code like this:
//if i don't use this line r.postform() don't works and return absolute nothing.
//html form works correctly
// I don't need to call r.PostFormValue for every key, just one
fmt.Println(r.PostFormValue("oldpass"))
if r.PostForm.Has("oldpass") && r.PostForm.Has("newpass1") && r.PostForm.Has("newpass2")
{ //if i don't call r.PostFormValue() the program stop before the if }
}
Make no sense to me... Also I remember to have used it without in the past, so I don't think it depend on parsing the value... What could be?
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I tried to fix this but don't know how
public function render()
{
return view('livewire.home')->extends('layouts.app')->section('content'),[
'products' => Product::take(3)->get()
];
It said that the syntax is error,
unexpected ',', expecting ';'
I'm newbie to Laravel so I couldn't write the correct syntax. Please let me know.
As you can see in the docs, to pass variables to the view, you need to set the second parameter in the method view() as the array of data.
public function render()
{
return view('livewire.home', [
'products' => Product::take(3)->get()
])->extends('layouts.app')->section('content');
}
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Closed 6 years ago.
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I am trying to check if a specific element is included in an output. I run:
results.include? {"_id"=>{"car_id"=>44, "page"=>"5"}, "summarized_time"=>100}
but I get an error:
Syntax error, unexpected =>, expecting '}'
What did I do wrong?
The problem is that the curly brackets in this case are interpreted as start of a block. Just put () around:
results.include?({"_id"=>{"car_id"=>44, "page"=>"5"}, "summarized_time"=>100})