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How to design a database for User Defined Fields?
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The short answer is "don't mix data and metadata." Creating varchar columns for fieldname or tablename is storing metadata identifiers as data strings, and that's the start of a lot of the problems. Also see en.wikipedia.org/wiki/Inner-platform_effec...
Does Java casting introduce overhead? Why?
...erence in typing for generic types and arrays makes it often unsuitable to mix arrays and generic types.
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MySQL stored procedure vs function, which would I use when?
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You can't mix in stored procedures with ordinary SQL, whilst with stored function you can.
e.g. SELECT get_foo(myColumn) FROM mytable is not valid if get_foo() is a procedure, but you can do that if get_foo() is a function. The price...
React.js: Wrapping one component into another
...s unique for a component, and you can use normal props too if you want, or mix props and children:
const AppLayout = ({header,footer,children}) => (
<div className="app">
<div className="header">{header}</div>
<div className="body">{children}</div>
<...
How do I install a custom font on an HTML site
...me.
You declare it in the CSS like this:
@font-face { font-family: Delicious; src: url('Delicious-Roman.otf'); }
@font-face { font-family: Delicious; font-weight: bold; src: url('Delicious-Bold.otf');}
Then, you can just reference it like the other standard fonts:
h3 { font-family: Deliciou...
When should the volatile keyword be used in C#?
Can anyone provide a good explanation of the volatile keyword in C#? Which problems does it solve and which it doesn't? In which cases will it save me the use of locking?
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What does Docker add to lxc-tools (the userspace LXC tools)?
... using KVM, vmware etc.
However, NCLXD also enables a hybrid cloud of a mix of traditional HW VMs and LXC VMs.
The OpenStack nclxd plugin a list of features supported include:
stop/start/reboot/terminate container
Attach/detach network interface
Create container snapshot
Rescue/unrescue instanc...
Why are joins bad when considering scalability?
...ndexes without even doing any in-depth data analysis to determine the best mix for leftmost prefix matching.
– Duncan
Apr 12 '10 at 22:12
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Using Custom Domains With IIS Express
Traditionally I use custom domains with my localhost development server. Something along the lines of:
14 Answers
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Should I always use a parallel stream when possible?
With Java 8 and lambdas it's easy to iterate over collections as streams, and just as easy to use a parallel stream. Two examples from the docs , the second one using parallelStream:
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