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Boolean.hashCode()
...ly large) arbitrary prime numbers. Any other two large prime numbers would do fine.
Why primes?
Suppose for a second that we picked composite numbers (non-primes), say 1000 and 2000. When inserting booleans into a hash table, true and false would go into bucket 1000 % N resp 2000 % N (where N is th...
Status bar and navigation bar appear over my view's bounds in iOS 7
I recently downloaded Xcode 5 DP to test my apps in iOS 7. The first thing I noticed and confirmed is that my view's bounds is not always resized to account for the status bar and navigation bar.
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Save string to the NSUserDefaults?
...ortantly he included "synchronize" - NSUserDefaults is very erratic if you don't call this!
– PostCodeism
Nov 29 '10 at 19:48
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How was the first compiler written?
...g memory addresses/offsets for things like jumps.
The first programs were done in exactly this fashion - hand-written opcodes.
However, most of the time it's simpler to use an assembler to "compile" assembly code, which automatically does these opcode lookups, as well as being helpful in computing...
What is a clearfix?
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If you don't need to support IE9 or lower, you can use flexbox freely, and don't need to use floated layouts.
It's worth noting that today, the use of floated elements for layout is getting more and more discouraged with the use of...
how to schedule a job for sql query to run daily?
...the Jobs node in SQL Server Agent and select 'New Job'
In the 'New Job' window enter the name of the job and a description on the 'General' tab.
Select 'Steps' on the left hand side of the window and click 'New' at the bottom.
In the 'Steps' window enter a step name and select the database you want ...
“Least Astonishment” and the Mutable Default Argument
...saying that would be better, just that functions being first-class objects does not fully preclude it.
– gerrit
Jan 11 '13 at 10:55
335
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Unit testing of private methods [duplicate]
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I don't understand why wanting to unit test a private method is design smell. Lets say, I start writing a class, and at the same time write the unit-test, before I start writing the public function, I write some fairly simple p...
Expanding a parent to the height of its children
...uto means that the browser should decide which value to apply. What really does the trick is overflow: overlay.
– Alba Mendez
Jul 30 '11 at 12:05
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Can you set a border opacity in CSS?
... Opera, Chrome */
}
The problem with this approach is that some browsers do not understand the rgba format and will not display any border at all if this is the entire declaration. The solution is to provide two border declarations. The first with a fake opacity, and the second with the actual. If...