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What is tail call optimization?
...il-call optimization is where you are able to avoid allocating a new stack frame for a function because the calling function will simply return the value that it gets from the called function. The most common use is tail-recursion, where a recursive function written to take advantage of tail-call op...
Why are Docker container images so large?
...um -y clean all to each line:
FROM fedora:latest
RUN yum -y install nano && yum -y clean all
RUN yum -y install git && yum -y clean all
It is important to do that for each RUN, before the layer gets committed, or else deletes don't actually remove data. That is, in a union/copy-on...
Access index of the parent ng-repeat from child ng-repeat
I want to use the index of the parent list (foos) as an argument to a function call in the child list (foos.bars).
6 Answer...
In Python, how do I create a string of n characters in one line of code?
...ly, of course;-).
Other ways to "make a string of 10 characters": 'x'*10 (all the ten characters will be lowercase xs;-), ''.join(chr(ord('a')+i) for i in xrange(10)) (the first ten lowercase letters again), etc, etc;-).
sh...
Why do we declare Loggers static final?
...ic final Logger log = LoggerFactory.getLogger(Foo.class);
The former way allows you to use the same logger name (name of the actual class) in all classes throughout the inheritance hierarchy. So if Bar extends Foo, both will log to Bar logger. Some find it more intuitive.
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Resizing SVG in html?
..., and one of the things I've heard about the format is that it doesn't get all pixelated when you zoom in on it.
8 Answers
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SQL Server SELECT LAST N Rows
...
All enumerated products are definetly SQL servers. If you want to talk about MS SQL server, why not name it so?
– gena2x
Jun 8 '16 at 9:45
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&& (AND) and || (OR) in IF statements
...
No, it will not be evaluated. And this is very useful. For example, if you need to test whether a String is not null or empty, you can write:
if (str != null && !str.isEmpty()) {
doSomethingWith(str.charAt(0));
}
or, the other way around
if (str == null || str.isEmpty()) ...
Create new user in MySQL and give it full access to one database
...nd want a connection from any host you can change 'hostname' to '%'. For example, ... TO 'dbuser'@'%' IDENTIFIED... '%' is the host wildcard.
– physicsmichael
Nov 12 '09 at 6:49
17...
Using .otf fonts on web browsers
...www.alistapart.com/articles/cssatten
Other Info:
http://randsco.com/index.php/2009/07/04/p680
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