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Difference between null and empty (“”) Java String
... @Zach L : when String s = null+"a"; it gives output nulla but null.concat("a") it gives the null pointer exception. what is the reason in my first case null+"a"; is working.
– Ved Prakash
Sep 14 '19 at 16:23
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How do I create a URL shortener?
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Food for thought, it might be useful to add a two character checksum to the url. That would prevent direct iteration of all the urls in your system. Something simple like f(checksum(id) % (62^2)) + f(id) = url_id
– koblas
Sep 4 '10 at...
SQL Server: converting UniqueIdentifier to string in a case statement
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I think I found the answer:
convert(nvarchar(50), RequestID)
Here's the link where I found this info:
http://msdn.microsoft.com/en-us/library/ms187928.aspx
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How can I use an http proxy with node.js http.Client?
...(chunk))
res.on('end', () => {
console.log('DONE', Buffer.concat(chunks).toString('utf8'))
})
})
}
}).on('error', (err) => {
console.error('error', err)
}).end()
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PHP - iterate on string characters
Is there a nice way to iterate on the characters of a string? I'd like to be able to do foreach , array_map , array_walk , array_filter etc. on the characters of a string.
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Capitalize only first character of string and leave others alone? (Rails)
I'm trying to get Rails to capitalize the first character of a string, and leave all the others the way they are. I'm running into a problem where "i'm from New York" gets turned into "I'm from new york."
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How to concatenate two strings to build a complete path
...ame. Thus
//dir///subdir////file is the same as /dir/subdir/file.
As such concatenating a two strings to build a complete path is a simple as:
full_path="$part1/$part2"
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Concatenate multiple files but include filename as section headers
I would like to concatenate a number of text files into one large file in terminal. I know I can do this using the cat command. However, I would like the filename of each file to precede the "data dump" for that file. Anyone know how to do this?
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Is C++14 adding new keywords to C++?
...ch else namespace static_assert using
char enum new static_cast virtual
char16_t explicit noexcept struct void
char32_t export nullptr switch ...
Is there a way to check if a file is in use?
...is closed after I'm done. I think you'll find that the using() {} is less characters than try {} finally { obj.Dispose() }. You'll also find that you now need to declare your object reference outside the using statement, which is more typing. If you have a explicit interface you'd also have to cas...