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Number of occurrences of a character in a string [duplicate]
...rge and (almost) entirely made up of repeated delimiters (&), it could allocate 12-24x the original size of the string due to object overheads in .Net. I would go with the second approach, and if that's not fast enough then write a for loop.
– Niall Connaughton
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How do I send a JSON string in a POST request in Go
...
Can this be updated to gather / inspect all it's errors? This is (for me, at least) the top result on google for making post requests in Go, and it's a good answer, but I see a ton of example code that just ignores errors, and I think it encourages bad practice in newbies. ...
Commenting in a Bash script inside a multiline command
...re that '__' remains unset
scat <<EOF # else exit with an error
Error: the parameter __='${__}' is set, hence the
comment-idiom '\${__+ <comment text>}' will fail
EOF
${__+ (example of inline comments)
------------------------------------------------
the following inline co...
How can I hash a password in Java?
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You can actually use a facility built in to the Java runtime to do this. The SunJCE in Java 6 supports PBKDF2, which is a good algorithm to use for password hashing.
byte[] salt = new byte[16];
random.nextBytes(salt);
KeySpec spec = new...
How do I view the list of functions a Linux shared library is exporting?
... -D flag.
– JPaget
Oct 21 '14 at 22:05
add a comment
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How do I make a redirect in PHP?
...into the common Cannot modify header information - headers already sent by error.
– Kai Noack
Aug 28 '16 at 18:33
1
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Catch all JavaScript errors and send them to server
I wondered if anyone had experience in handling JavaScript errors globally and send them from the client browser to a server.
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Python date string to date object
...en as 1900. The issue occurs when parsing Feb date like '2902'. I get this error ValueError: day is out of range for month. Not sure how I can set the default year while parsing.
– Shubham Naik
Apr 19 at 13:28
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Android Fragments and animation
...eat but it turns out that building this with build tools 21.1 generates an error saying "Invalid file name: must contain only lowercase letters and digits ([a-z0-9_.])". I suggest editing the filenames in the answer to pop_enter.xml and pop_exit.xml.
– smichak
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What's the difference between Ruby's dup and clone methods?
...does not.
o = Object.new
def o.foo
42
end
o.dup.foo # raises NoMethodError
o.clone.foo # returns 42
Second, clone preserves the frozen state, while dup does not.
class Foo
attr_accessor :bar
end
o = Foo.new
o.freeze
o.dup.bar = 10 # succeeds
o.clone.bar = 10 # raises RuntimeError
The...