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What is the difference between Session.Abandon() and Session.Clear()
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Clear - Removes all keys and values from the session-state collection.
Abandon - removes all the objects stored in a Session. If you do not call the Abandon method explicitly, the server removes these objects and destroys the session when the session times out...
How can I remove a pytz timezone from a datetime object?
Is there a simple way to remove the timezone from a pytz datetime object?
e.g. reconstructing dt from dt_tz in this example:
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How do you do a simple “chmod +x” from within python?
I want to create a file from within a python script that is executable.
7 Answers
7
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Mechanisms for tracking DB schema changes [closed]
...version number of the database. The N.sql files are crafted by hand, to go from version (N-1) to version N of the database.
They can be used to add tables, add columns, migrate data from an old to a new column format then drop the column, insert "master" data rows such as user types, etc. Basically...
Exec : display stdout “live”
...tdout/stderr events (spawn.stdout.on('data',callback..)) as they happen.
From NodeJS documentation:
var spawn = require('child_process').spawn,
ls = spawn('ls', ['-lh', '/usr']);
ls.stdout.on('data', function (data) {
console.log('stdout: ' + data.toString());
});
ls.stderr.on('data'...
How can I remove the string “\n” from within a Ruby string?
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If you want or don't mind having all the leading and trailing whitespace from your string removed you can use the strip method.
" hello ".strip #=> "hello"
"\tgoodbye\r\n".strip #=> "goodbye"
as mentioned here.
edit The original title for this question was different. My answ...
Git: cannot checkout branch - error: pathspec '…' did not match any file(s) known to git
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Try git fetch so that your local repository gets all the new info from github. It just takes the information about new branches and no actual code. After that the git checkout should work fine.
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Squash my last X commits together using Git
...<after-this-commit> is either the SHA1 hash or the relative location from the HEAD of the current branch from which commits are analyzed for the rebase command. For example, if the user wishes to view 5 commits from the current HEAD in the past the command is git rebase -i HEAD~5.
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Abusing the algebra of algebraic data types - why does this work?
...in a moment.
As you've probably noticed, Haskell tends to borrow concepts from Category Theory, and all of the above has a very straightforward interpretation as such:
Given objects A and B in Hask, their product A×B is the unique (up to isomorphism) type that allows two projections fst : A×B ...
In what cases will HTTP_REFERER be empty
...age in the window/tab.
clicked a link in an external application.
switched from a https URL to a http URL.
switched from a https URL to a different https URL.
has security software installed (antivirus/firewall/etc) which strips the referrer from all requests.
is behind a proxy which strips the refe...