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Why don't C++ compilers define operator== and operator!=?
...nerated default for this operator can be guessed by what Stroustrup said about the default copy constructor in "The Design and Evolution of C++" (Section 11.4.1 - Control of Copying):
I personally consider it unfortunate
that copy operations are defined by
default and I prohibit copying of
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How to redirect to Index from another controller?
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how to redirect to a view without a controller? such as Shared/Error
– Dylan Czenski
May 20 '16 at 15:36
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How to match a String against string literals in Rust?
I'm trying to figure out how to match a String in Rust.
5 Answers
5
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Python: Continuing to next iteration in outer loop
...ed to know if there are any built-in ways to continue to next iteration in outer loop in python. For example, consider the code:
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trying to animate a constraint in swift
...constant = 8
Swift 2
UIView.animateWithDuration(0.5) {
self.view.layoutIfNeeded()
}
Swift 3, 4, 5
UIView.animate(withDuration: 0.5) {
self.view.layoutIfNeeded()
}
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Python: using a recursive algorithm as a generator
...:i] + string[i+1:], prefix+string[i]):
yield perm
Or without an accumulator:
def getPermutations(string):
if len(string) == 1:
yield string
else:
for i in xrange(len(string)):
for perm in getPermutations(string[:i] + string[i+1:]):
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What is the difference between SQL, PL-SQL and T-SQL?
... the use of JOINs. This simplifies the filtering of records to easily pick out the entries that match a certain criteria unlike with SQL where it can be a bit more complicated.
Choosing between T-SQL and SQL is all up to the user. Still, using T-SQL is still better when you are dealing with Microso...
How does one use rescue in Ruby without the begin and end block
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You can also rescue inline:
1 + "str" rescue "EXCEPTION!"
will print out "EXCEPTION!" since 'String can't be coerced into Fixnum'
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Get contentEditable caret index position
...hboundary to documentboundary or whatever granularity for your case. Check out the API for more details. Cheers! :)
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JavaScript by reference vs. by value [duplicate]
...e and when by reference and when modifying a passed item affects the value outside a function and when not. I'm also interested in when assigning to another variable is by reference vs. by value and whether that follows any different rules than passing as a function parameter.
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