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TCP: can two different sockets share a port?
...f the connection. An established connection is uniquely identified by the combination of client-side and server-side IP/Port pairs. Multiple connections on the same server can share the same server-side IP/Port pair as long as they are associated with different client-side IP/Port pairs, and the s...
How to check if all elements of a list matches a condition?
...t answer here is to use all(), which is the builtin for this situation. We combine this with a generator expression to produce the result you want cleanly and efficiently. For example:
>>> items = [[1, 2, 0], [1, 2, 0], [1, 2, 0]]
>>> all(flag == 0 for (_, _, flag) in items)
True
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tmux: How to join two tmux windows into one, as panes?
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This will move the 2nd window as a pane to the 1st window. The opposite command is break-pane
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In a git merge conflict, what are the BACKUP, BASE, LOCAL, and REMOTE files that are generated?
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Git performs a three-way merge, finding the common ancestor (aka "merge base") of the two branches you are merging. When you invoke git mergetool on a conflict, it will produce these files suitable for feeding into a typical 3-way merge tool. Thus:
foo.LOCAL: the "...
Regex to get string between curly braces
...s asking for regex, I was searching for regex, but the accepted answer was completely useless for me (while the question seemed very promising itself). After reading the first comment I must admit that if I were to answer this question first I could have answered the same/similar way... So in the en...
How to programmatically set style attribute in a view
..." encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_pressed="true"
android:drawable="@drawable/btn_pressed" />
<item
android:state_pressed="false"
android:drawable="@drawable/btn_normal" />
</selec...
How do I put an 'if clause' in an SQL string?
...c query, you can do:
UPDATE purchaseOrder
SET purchaseOrder_status = 'COMPLETED'
WHERE purchaseOrder_ID = '@purchaseOrder_ID' and
not exists (SELECT *
FROM itemsOrdered WHERE purchaseOrder_ID = '@purchaseOrdered_ID' AND status = 'PENDING'
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Scala: What is the difference between Traversable and Iterable traits in Scala collections?
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@RobinGreen I mean complying with the Traversable interface does not require keeping state, while complying with Iterator interface does.
– Daniel C. Sobral
Nov 6 '13 at 16:59
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Stop node.js program from command line
...unbinding from any ports it is listening on.
See also: https://superuser.com/a/262948/48624
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Reuse Cucumber steps
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UPDATE: The method described below has been deprecated. The recommended way to call a step from within another step now looks like this:
Given /^I login successfully$/
step "I login with valid credentials"
end
Old, deprecated method (for reference):
You can call steps from o...