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How to use Session attributes in Spring-mvc
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If you want to delete object after each response you don't need session,
If you want keep object during user session ,
There are some ways:
directly add one attribute to session:
@RequestMapping(method = RequestMethod.GET...
How to loop through all but the last item of a list?
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for x in y[:-1]
If y is a generator, then the above will not work.
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Accessing elements of Python dictionary by index
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Like, for example, if you had a dictionary of unknown depth, e.g, a nested dictionary, and you have element "n" at an unknown depth, stored in an unknown element.
– Ethan Bierlein
May 13 '15 at 12:27
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How to write file if parent folder doesn't exist?
...File(path, contents, cb) {
mkdirp(getDirName(path), function (err) {
if (err) return cb(err);
fs.writeFile(path, contents, cb);
});
}
If the whole path already exists, mkdirp is a noop. Otherwise it creates all missing directories for you.
This module does what you want: https://npm...
How do I show/hide a UIBarButtonItem?
...ted:YES];
// This is how you add the button to the toolbar and animate it
if (![toolbarButtons containsObject:self.myButton]) {
// The following line adds the object to the end of the array.
// If you want to add the button somewhere else, use the `insertObject:atIndex:`
// method in...
detach all packages while working in R
... value present. One can test for this with names(sessionInfo()$otherPkgs). If it returns NULL, then this is the cause.
– mmfrgmpds
Sep 20 '19 at 16:31
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Identify user in a Bash script called by sudo
If I create the script /root/bin/whoami.sh containing:
7 Answers
7
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Add object to ArrayList at specified index
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After you add object2 to position 2, it will move object3 to position 3.
If you want object3 to be at position3 all the time I'd suggest you use a HashMap with position as key and object as a value.
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Why does the MongoDB Java driver use a random number generator in a conditional?
...gan's laws it is a trivial observation that this piece of code amounts to
if (!_ok && Math.random() <= 0.1)
return res;
The commit that originally introduced this logic had
if (_ok == true) {
_logger.log( Level.WARNING , "Server seen down: " + _addr, e );
} else if (Math.random() &...
How to call an external command?
How do you call an external command (as if I'd typed it at the Unix shell or Windows command prompt) from within a Python script?
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