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When to use wrapper class and primitive type
...bjects very rapidly or if many many many of them build up over a period of time. However, i'd expect a decent programmer to be able to identify these special cases either avoid or amend accordingly. I never said that it's NEVER significant, however generally speaking, it isn't.
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UnicodeDecodeError when redirecting to file
...string/array of bytes. This distinction has been mostly ignored for a long time because of the historic ubiquity of encodings with no more than 256 characters (ASCII, Latin-1, Windows-1252, Mac OS Roman,…): these encodings map a set of common characters to numbers between 0 and 255 (i.e. bytes); t...
Why is my git repository so big?
... and needs cooperation between developers and/or manager intervention. Sometimes just leaving the loadstone inside can be better option.
– Vi.
Oct 19 '15 at 15:12
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What's the most efficient test of whether a PHP string ends with another string?
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@Nathan No, it's not worth the time to benchmark since substr_compare() works nicely.
– David Harkness
Jan 31 '19 at 23:02
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Repairing Postgresql after upgrading to OSX 10.7 Lion
...Mountain Lion you can just create the dir and do the symlink and not waste time doing the find unless the symlink doesn't work.
PS - my PostgreSQL was installed through the official installer.
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Is there a bash command which counts files?
...'s being generated, so the output of ls is never in memory at any point in time.
-- File names are separated from the command using -- so as not to be understood as arguments to ls (in case log* is removed)
The shell will expand log* to the full list of files, which may exhaust memory if it's a lo...
When do you use map vs flatMap in RxJava?
...ired as expected, and will cause confusion. I've been bitten by this a few times as I'm still learning RX Java. I find flatMap is a sure-fire way of ensuring things get processed as you expect.
– user924272
Jun 17 '18 at 17:22
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Does Android support near real time push notification?
...using GCM SDKs today to handle notifications, and client app upgrade takes time.
As of June 26, 2012, Google Cloud Messaging is the preferred way of sending messages to applications running on devices.
Previously (and now deprecated), the service was called Cloud To Device Messaging.
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What is 'Currying'?
...t. (In lambda calculus, for example, functions only take one argument at a time.)
– Sam DeFabbia-Kane
Aug 30 '09 at 23:00
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What is Java String interning?
... share same memory. So if you have list of names where 'john' appears 1000 times, by interning you ensure only one 'john' is actually allocated memory.
This can be useful to reduce memory requirements of your program. But be aware that the cache is maintained by JVM in permanent memory pool which i...