This question already has answers here:
How do I stop iteration and return an error when Iterator::map returns a Result::Err?
(4 answers)
Closed 6 years ago.
I have an Iterator<Item=io::Result<u8>> that I'd like to convert to io::Result<Vec<u8>>.
iter.map(|x| x.unwrap()).collect::<Vec<u8>>()
will give me the Vec<u8> but how can I keep the Err part in case of an error?
#aspex thanks for you help, it's
let fold: io::Result<Vec<_>> = iter.collect();
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This question already has answers here:
How to avoid scientific notation for large numbers in JavaScript?
(27 answers)
Closed 2 years ago.
I am receiving data as,
{
"balance": 1e+22
}
and I want it as,
{
"balance": 10000000000000000000000
}
What should I do so that I get proper response value in Node APIs?
Solution found: How to avoid scientific notation for large numbers in JavaScript?
Code which worked as a perfect solution: BigInt(n).toString();
This question already has an answer here:
Javascript regexObj.exec() says TypeError: pattern.exec is not a function
(1 answer)
Closed 2 years ago.
I am trying to check if a string exists with
pm.expect(jsonData[0]["name"]).to.match('abagnale');
but I am getting
TypeError: e.exec is not a function
Use a regex expression instead of a string
The error message is a little generic but in this case it can be fixed by using a regex
to.match(/abagnale/)
instead of a string
to.match('abagnale')
This question already has answers here:
ios programming - Data argument not used by format string
(2 answers)
Closed 6 years ago.
Hi there I'm trying to do an NSLog but what I want to see is what it's inside of my dictionary like this.
NSLog(#"diccionario", diccionario);
And this warning appears:
Data argument not used by format string
The diccionario object contains data from a server so like I said I want to print in the console the info that diccionario contains, because is not printing anything.
Thanks.
NSLog(#"diccionario : %#", diccionario);
Should be the solution.
This question already has answers here:
what does dollar sign mean in objective-c?
(2 answers)
Closed 9 years ago.
I'm still new to objective-c I went through a code example from git hub and saw '$' notation before parameters for example:
titleLabel.$height = TITLE_HEIGHT;
can some one explain the difference between titleLabel.$height and titleLabel.height
The property happens to include a dollar sign in its name, it has no significance.
For Example:
#property int $height;
This question already has answers here:
Objective C - Why do constants start with k
(6 answers)
Closed 9 years ago.
I have always wondered, when you define something such as a string (or anything for that matter), why do people put a 'k' ahead of the defined name?
e.g. #define kHello = #"Hello"
What's that 'k' all about?
I'm pretty sure the 'k' is short for constant. (Don't ask me why it's a k.)