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What is the use case of noop [:] in bash?
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I sometimes use while : ; do ... ; done if I want a quick and dirty infinite loop. (Usually there's a sleep in the loop, and I type Ctrl-C to kill it.)
– Keith Thompson
May 12 '16 at 1:05
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How to write loop in a Makefile?
...lled all. If such a file exists, make then checks that file's last-changed-time, and the makefile will almost certainly not do what you intended. The .PHONY declaration tells make that all is a symbolic target. Make will therefore consider the all target to always be out of date. Perfect. See the ma...
How many bytes does one Unicode character take?
...er, you can copy&paste it on http://codepoints.net/.
I wasted a lot of time on this useless list (but it's sorted!).
MySQL has a charset called "utf8" which actually does not support characters longer than 3 bytes. So you can't insert a pile of poo, the field will be silently truncated. Use "utf...
How do you determine the ideal buffer size when using FileInputStream?
...ly inefficient (i.e. if you configured your buffer to read 4100 bytes at a time, each read would require 2 block reads by the file system). If the blocks are already in cache, then you wind up paying the price of RAM -> L3/L2 cache latency. If you are unlucky and the blocks are not in cache yet...
How to remove all debug logging calls before building the release version of an Android app?
...exceptions — but you can also specify different logging behaviours at runtime.
In this example, logging statements will only be written to logcat in debug builds of my app:
Timber is set up in my Application onCreate() method:
if (BuildConfig.DEBUG) {
Timber.plant(new Timber.DebugTree());
}
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Submit form on pressing Enter with AngularJS
...rective:
How can I detect onKeyUp in AngularJS?
EDIT (2014-08-28): At the time this answer was written, ng-keypress/ng-keyup/ng-keydown did not exist as native directives in AngularJS. In the comments below @darlan-alves has a pretty good solution with:
<input ng-keyup="$event.keyCode == 13 &...
When do you need to explicitly call a superclass constructor?
...ss instead of the superclass constructor
You claim that:
At the same time I've also seen instances on here where someone's problem was not explicitly calling super().
Could you give any examples? I can't imagine how that's possible...
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At runtime, find all classes in a Java application that extend a base class
...e as easy as it is in the .Net world and this answer has saved me a lot of time.
– akmad
Oct 1 '12 at 19:55
1
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How to embed small icon in UILabel
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Note: it slow down compile time
– Jack
Apr 27 '18 at 8:03
I can do it ...
Removing an element from an Array (Java) [duplicate]
...e List intrrface gives you random access, but LinkedList gives O(n) access times instead of O(1).
– Tom Hawtin - tackline
Mar 13 '09 at 14:24
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