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What are the options for storing hierarchical data in a relational database? [closed]

...s a result, most people end up having to settle for one or the other especially if there are more than, say, a lousy 100,000 nodes or so. Using the push stack method can take a whole day to do the conversion on what MLM'ers would consider to be a small million node hierarchy. I thought I'd give Ce...
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Encoding URL query parameters in Java

... URL or by Mr. Sindi in this thread. URIUtil of Apache httpclient is really useful, although there are some alternatives URIUtil.encodeQuery(url); For example, it encodes space as "+" instead of "%20" Both are perfectly valid in the right context. Although if you really preferred you cou...
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What's the maximum value for an int in PHP?

Ignoring the special libraries that allow you to work with very big numbers, what's the largest int value you can store in PHP? ...
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Using fonts with Rails asset pipeline

...path(...). This helper does exactly the same thing but it's more clear. Finally, use your font in your CSS like you declared it in the font-family part. If it was declared capitalized, you can use it like this: font-family: 'Icomoon'; ...
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Cannot download Docker images behind a proxy

I installed Docker on my Ubuntu 13.10 (Saucy Salamander) and when I type in my console: 25 Answers ...
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Struct constructor: “fields must be fully assigned before control is returned to the caller.”

... @RogerWillcocks, just call the default constructor then: public YourStruct(some params) : this() (see vittore's answer) – Thomas Levesque Nov 27 '12 at 2:25 ...
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Git SSH error: “Connect to host: Bad file number”

...locking it. You can solve this by performing an SSH to port 443 (your firewall / isp will not block this). It is also important that you need to ssh to "ssh.github.com" instead of github.com. Otherwise, you will report to the webserver instead of the ssh server. Below are all the steps needed to so...
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Fastest way to check if a string matches a regexp in ruby?

...y require 'benchmark' str = "aacaabc" re = Regexp.new('a+b').freeze N = 4_000_000 Benchmark.bm do |b| b.report("str.match re\t") { N.times { str.match re } } b.report("str =~ re\t") { N.times { str =~ re } } b.report("str[re] \t") { N.times { str[re] } } b.report("re =~ str...
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Is it possible to make anonymous inner classes in Java static?

... a reference to the pointer of the containing instance (they are also not called inner classes anymore, they are called nested classes). ...
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How to make an empty div take space

...ing a <table> here, though? They will do this kind of stuff automatically. share | improve this answer | follow | ...