This question already has answers here:
How to postpone/defer the evaluation of f-strings?
(14 answers)
Closed 3 years ago.
Is there a way to achieve applying f-strings interpolation dynamically on a string?
For example given the string a = '{len([1])}'
a.interpolate() to give '1'
Try this:
a = f'{len([1])}'
print(a)
#1
Related
This question already has answers here:
Why is this printing 'None' in the output? [duplicate]
(2 answers)
Why does the print function return None?
(1 answer)
Closed last year.
print(print("Hello World!"))
and the output is :
Hello World!
None
The print function has no return value, i.e. it returns None.
(What did you expect to get with the second print?)
This question already has answers here:
How to get last 2 digit from a String
(7 answers)
Closed 1 year ago.
input :
DEPT MGR_AEG
output :
AEG
above is the input and expected output from piece of Groovy code. I mean I need to fetch the last 3 characters of input string. how to achieve this in Groovy ?
thanks in advance for your help.
reg, Avinash
The simplest way is a substring expression:'
assert 'DEPT MGR_AEG'[-3..-1] == 'AEG'
You can also use take() but it's somewhat unintuative:
assert 'DEPT MGR_AEG'.reverse().take(3).reverse() == 'AEG'
This question already has answers here:
How do I get the first character out of a string?
(7 answers)
Closed 6 years ago.
In JavaScript, I'd write:
s.charAt(0)
What would it be in Rust? How should I handle the s.length == 0 case?
Use s.chars().next(). This will return None if the string is empty or Some(c) otherwise.
This question already has answers here:
Convert string (without any separator) to list
(9 answers)
Closed 7 years ago.
I have a string s="12345678"
I need to store these numbers in a list like below format.
s=['1','2','3','4','5','6','7','8']
So can anybody help me how to do this.
Thanks,
Try this:
s = "12345678"
a = [c for c in s]
This question already has answers here:
print variable-name in Matlab
(4 answers)
Closed 9 years ago.
I have structure array
some_struct_var=struct( 'filed1', filed1, 'filed2', filed2 ,...)
I want to create a string
str=['The struct variable name is :' , some_struct_var]
with the name of the structure variable in it. The some_struct_var may vary and is not fixed.
Create a function that takes any variable as an input and returns the string equivalent of that variable's name as an ouput like so:
varToStr = #(x) inputname(1);
structVarString = varToStr(some_struct_var)
str = ['The struct variable name is :', structVarString]