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argparse store false if unspecified
...ogging').
– Krassi
Jun 18 '19 at 12:05
add a comment
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What is the Scala annotation to ensure a tail recursive function is optimized?
...eption("bang!")
| else bang(x-1)
| }
| }
<console>:9: error: could not optimize @tailrec annotated method: it contains a recursive call not in tail position
@tailrec def boom(x: Int): Int = {
^
<console>:13: error: could not optimize @tailrec ann...
Write a function that returns the longest palindrome in a given string
I thought of a solution but it runs in O(n^2) time
22 Answers
22
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Is std::vector copying the objects with a push_back?
...p was passed to the vector. See here: coliru.stacked-crooked.com/a/99d4f04f05e5c7f3
– Karl Nicoll
Dec 10 '19 at 10:18
...
Manually raising (throwing) an exception in Python
...tically fits your issue.
Be specific in your message, e.g.:
raise ValueError('A very specific bad thing happened.')
Don't raise generic exceptions
Avoid raising a generic Exception. To catch it, you'll have to catch all other more specific exceptions that subclass it.
Problem 1: Hiding bugs
...
RESTful Services - WSDL Equivalent
...hand-written docs and manually written APIs, which are labor intensive and error-prone.
– Eric Grange
Sep 27 '12 at 3:45
1
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TypeError: 'module' object is not callable
Why am I getting this error?
I'm confused.
11 Answers
11
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How can I plot with 2 different y-axes?
...# set up some fake test data
time <- seq(0,72,12)
betagal.abs <- c(0.05,0.18,0.25,0.31,0.32,0.34,0.35)
cell.density <- c(0,1000,2000,3000,4000,5000,6000)
## add extra space to right margin of plot within frame
par(mar=c(5, 4, 4, 6) + 0.1)
## Plot first set of data and draw its axis
plot(t...
error: passing xxx as 'this' argument of xxx discards qualifiers
...he object is const; so any attempt to modify the const object should be an error. Hence compiler generates an error message.
The solution is simple: make the functions const as:
int getId() const {
return id;
}
string getName() const {
return name;
}
This is necessary because now you ca...
“Too many values to unpack” Exception
...turnATupleWithThreeValues()
print a
print b
print c
But this raises your error
def returnATupleWithThreeValues():
return (1,2,3)
a,b = returnATupleWithThreeValues()
print a
print b
raises
Traceback (most recent call last):
File "c.py", line 3, in ?
a,b = returnATupleWithThreeValues()...