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What is tail recursion?
...return x;
} else {
return x + recsum(x - 1);
}
}
If you called recsum(5), this is what the JavaScript interpreter would evaluate:
recsum(5)
5 + recsum(4)
5 + (4 + recsum(3))
5 + (4 + (3 + recsum(2)))
5 + (4 + (3 + (2 + recsum(1))))
5 + (4 + (3 + (2 + 1)))
15
Note how every recur...
How do you create a Distinct query in HQL
...ll just pull the data from the database to the memory with repetitions and all, and then discard the repetitions afterwards; depending on how often the data repeats, that can increase the I/O operations quite a lot.
– Haroldo_OK
Jan 21 '19 at 11:49
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Git submodule update
...out the specific version of the project, but not within a branch. This is called having a detached head — it means the HEAD file points directly to a commit, not to a symbolic reference.
The issue is that you generally don’t want to work in a detached head environment, because it’s easy to l...
Convert audio files to mp3 using ffmpeg
... me, changing -b to -q absolutely butchers the sound. Using no options at all, or using the options presented in the answer, sound virtually the same as the source .wav.
– Michael Teter
Aug 5 '19 at 0:00
...
Use a URL to link to a Google map with a marker on it
... can use the following URL:
https://www.google.com/maps/search/?api=1&query=36.26577,-92.54324
For further details please read aforementioned documentation.
You can also file feature requests for this API in Google issue tracker.
Hope this helps!
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What is the idiomatic way to compose a URL or URI in Java?
...t Mikael, have you thought of publishing it to maven central? I know its small but makes using it easier. I can't find a similar class besides in JAX-RS. The lack of dependencies is definitely a plus.
– Barry Pitman
Mar 1 '12 at 8:46
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The “unexpected ++” error in jslint [duplicate]
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This doesn't really explain the 'adds' confusion' bit. @samir-talwar adds an explaination.
– Matt Clarkson
Sep 12 '11 at 13:44
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How can I view all historical changes to a file in SVN
...
There's no built-in command for it, so I usually just do something like this:
#!/bin/bash
# history_of_file
#
# Outputs the full history of a given file as a sequence of
# logentry/diff pairs. The first revision of the file is emitted as
# full text since there's no...
Check for changes to an SQL Server table?
...answered Aug 2 '08 at 5:20
Jon GallowayJon Galloway
49k2424 gold badges118118 silver badges191191 bronze badges
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How are cookies passed in the HTTP protocol?
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so in any request that is made, are all the cookies ipso facto sent?
– BKSpurgeon
Feb 7 '18 at 0:19
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