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Creating and playing a sound in swift
...ay() {
AudioServicesPlaySystemSound(soundEffect)
}
}
Usage:
testSound = Sound(name: "test", type: "caf")
testSound.play()
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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
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I updated my test according to answer, and for some reason, despite the suggested function IS faster, it's actually not very significant: 264 ms original, 258ms suggested one
– Petr
Apr 19 '13 at 9:5...
explicit casting from super class to subclass
...t ClassCastException.
So if you are downcasting you should use instanceof test to avoid screwing up.
if (animal instanceof Dog) {
Dog dog = (Dog) animal;
}
Now a question comes to our mind. Why the hell compiler is allowing the downcast when eventually it is going to throw a java.lang.ClassCa...
how to exclude null values in array_agg like in string_agg using postgres?
...t(array_in) a
WHERE
a IS NOT NULL
;
'
LANGUAGE sql
;
Doing a pgbench test proved (with high confidence) that array_remove() is a little more than twice as fast. I did my test on double precision numbers with a variety of array sizes (10, 100 and 1000 elements) and random NULLs in between.
...
Get Insert Statement for existing row in MySQL
...ntains all the information about the new timezone and do all the necessary testing. When it comes time to move that timezone information to the production database I have to create an insert statement from scratch, or do a export/import. It would be nice to be able to just get the insert, and then...
Create nice column output in python
...['busybox', 'c3c37d5d-38d2-409f-8d02-600fd9d51239', 'linuxnode-1-292735', 'Test server.'],
['alpine-python', '6bb77855-0fda-45a9-b553-e19e1a795f1e', 'linuxnode-2-249253', 'The one that runs python.'],
['redis', 'afb648ba-ac97-4fb2-8953-9a5b5f39663e', 'linuxnode-3-3416918', 'For queues and st...
How to pass parameters to the DbContext.Database.ExecuteSqlCommand method?
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@GregB I do not think you are correct here. I have tested that it won't allow me to, for instance, terminate a string literal early. Moreover, I looked at the source code and found that it's using DbCommand.CreateParameter to wrap up any raw values into parameters. So no SQL ...
How can I detect if a file is binary (non-text) in python?
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-1 - I don't think 'contains a zero byte' is an adequate test for binary vs text, for example I can create a file containing all 0x01 bytes or repeat 0xDEADBEEF, but it is not a text file. The answer based on file(1) is better.
– Sam Watkins
...
JavaScript math, round to two decimal places [duplicate]
...stackoverflow.com/a/32605063/1726511 Which seems to work well with all the tests I've tried.
There is one minor modification required though, the function in the answer linked above returns whole numbers when it rounds to one, so for example 99.004 will return 99 instead of 99.00 which isn't ideal f...
How to calculate dp from pixels in android programmatically [duplicate]
...t density for a specific display, use densityDpi" . However, now that I've tested both ways, both seem to work fine. Just try to prefer float or double instead of int, because int might lose some precision on some cases. For example, try to convert the height to dp and back to px on QVGA, and you wi...