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Spring mvc @PathVariable
Can you give me a brief explanation and a sample in using @PathVariable in spring mvc? Please include on how you type the url?
I'm struggling in getting the right url to show the jsp page. Thanks.
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Use of 'use utf8;' gives me 'Wide character in print'
...se UTF8, then it will interpret those three bytes as your single character and that is what is displayed.
If we add in the utf8 module, things are different. In this case, Perl interprets your string as just two characters.
$ perl -Mutf8 -E 'say join ":", map { ord } split //, "鸡\n";'
40481:10
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Why does the PHP json_encode function convert UTF-8 strings to hexadecimal entities?
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JSON_UNESCAPED_UNICODE was introduced in PHP 5.4.0, and is unavailable in earlier versions. When using it in earlier versions you will get this error: "Warning: json_encode() expects parameter 2 to be long, string given in ...". See CertaiN's answer below for 5.3 solution.
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What's the point of g++ -Wreorder?
...hat somebody might see the list of member initialisers in the constructor, and think that they're executed in that order (j first, then i). They are not, they are executed in the order the members are defined in the class.
Suppose you wrote A(): j(0), i(j) {}. Somebody might read that, and think th...
Delete all tags from a Git repository
...sophy where you pipe everything. On Windows use git bash with the same command.
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Overload constructor for Scala's Case Classes?
...f apply(bar: Int) = new Foo(bar)
}
Foo(1, 2)
Foo(1)
In Scala 2.8, named and default parameters can often be used instead of overloading.
case class Baz(bar: Int, baz: Int = 0)
new Baz(1)
Baz(1)
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python pip: force install ignoring dependencies
... @Connor there is no equivalent to "recommended packages" in any of the standard Python packaging tools: distutils, setuptools, pip. Setuptools (and pip) has "extras", but they must be explicitly selected and installed by the user.
– shadowtalker
Oct 18 '18 at...
Hard reset of a single file
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You can use the following command:
git checkout HEAD -- my-file.txt
... which will update both the working copy of my-file.txt and its state in the index with that from HEAD.
-- basically means: treat every argument after this point as a file name. Mo...
Get yesterday's date in bash on Linux, DST-safe
I have a shell script that runs on Linux and uses this call to get yesterday's date in YYYY-MM-DD format:
10 Answers
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How do I SET the GOPATH environment variable on Ubuntu? What file must I edit?
...heck out this answer.
Old Way:
Just add the following lines to ~/.bashrc and this will persist. However, you can use other paths you like as GOPATH instead of $HOME/go in my sample.
export GOPATH=$HOME/go
export PATH=$PATH:$GOROOT/bin:$GOPATH/bin
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