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How can I import Swift code to Objective-C?
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Why is this so hard and poorly documented?
– uchuugaka
Nov 1 '15 at 6:43
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Difference between Lookup() and Dictionary(Of list())
... believe the concrete Lookup class is immutable, and the ILookup interface doesn't provide any mutating members. There could be other mutable implementations, of course.)
When you lookup a key which isn't present in a lookup, you get an empty sequence back instead of a KeyNotFoundException. (Hence t...
sed in-place flag that works both on Mac (BSD) and Linux
Is there an invocation of sed todo in-place editing without backups that works both on Linux and Mac? While the BSD sed shipped with OS X seems to need sed -i '' … , the GNU sed Linux distributions usually come with interprets the quotes as empty input file name (instead of the backup exten...
A numeric string as array key in PHP
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It looks like there is a way, actually! Do you disagree with this answer? stackoverflow.com/a/35180513/247696
– Flimm
Apr 19 '16 at 11:48
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MySQL select 10 random rows from 600K rows fast
How can I best write a query that selects 10 rows randomly from a total of 600k?
26 Answers
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Java List.add() UnsupportedOperationException
...add objects to a List<String> instance but it throws an UnsupportedOperationException .
Does anyone know why?
7 An...
Rebase array keys after unsetting elements
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+1. I note that the manual does not explicitly state that ordering will be maintained, but I can't see why it wouldn't be.
– Lightness Races in Orbit
May 9 '11 at 22:20
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How to get the full url in Express?
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The protocol is available as req.protocol. docs here
Before express 3.0, the protocol you can assume to be http unless you see that req.get('X-Forwarded-Protocol') is set and has the value https, in which case you know that's your protocol
The host comes from req.g...
How to prettyprint a JSON file?
... file that is a mess that I want to prettyprint. What's the easiest way to do this in Python?
12 Answers
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scheduleAtFixedRate vs scheduleWithFixedDelay
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@BrettVanderVeen From the documentation, "If any execution of this task takes longer than its period, then subsequent executions may start late, but will not concurrently execute." In other words, a conforming implementation would not allow the next ...