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Best way to create enum of strings?
.../**
* @author The Elite Gentleman
*
*/
public enum Strings {
STRING_ONE("ONE"),
STRING_TWO("TWO")
;
private final String text;
/**
* @param text
*/
Strings(final String text) {
this.text = text;
}
/* (non-Javadoc)
* @see java.lang.Enum#toS...
Generate an integer that is not among four billion given ones
...put file with any given 16-bit prefix, for all possible 16-bit prefixes in one pass through the input file. At least one of the buckets will have be hit less than 216 times. Do a second pass to find of which of the possible numbers in that bucket are used already.
If it means more than 32 bits, but...
How does the bitwise complement operator (~ tilde) work?
...ion of a number, taking its complement (inverting all the bits) and adding one. Two starts as 0000 0010, and by inverting the bits we get 1111 1101. Adding one gets us the result above. The first bit is the sign bit, implying a negative.
So let's take a look at how we get ~2 = -3:
Here's two again:
...
How to remove a key from Hash and get the remaining hash in Ruby/Rails?
...
Oneliner plain ruby, it works only with ruby > 1.9.x:
1.9.3p0 :002 > h = {:a => 1, :b => 2}
=> {:a=>1, :b=>2}
1.9.3p0 :003 > h.tap { |hs| hs.delete(:a) }
=> {:b=>2}
Tap method always retur...
is there a css hack for safari only NOT chrome?
... (MacBook/IPad/etc... with both browser and OS version numbers!)
Claiming none of these work is not accurate (and actually not even possible.) Many of these are not really 'hacks' but code built into versions of Safari by Apple. More info is needed. I love the fact that you came here, and really wan...
Java: notify() vs. notifyAll() all over again
If one Googles for "difference between notify() and notifyAll() " then a lot of explanations will pop up (leaving apart the javadoc paragraphs). It all boils down to the number of waiting threads being waken up: one in notify() and all in notifyAll() .
...
View more than one project/solution in Visual Studio
...
This is the way Visual Studio is designed: One solution, one Visual Studio (VS) instance.
Besides switching between solutions in one VS instance, you can also open another VS instance and open your other solution with that one. Next to solutions there are as you said...
Is it safe to use -1 to set all bits to true?
... to do it exactly as you have shown, since it is the most straight forward one. Initialize to -1 which will work always, independent of the actual sign representation, while ~ will sometimes have surprising behavior because you will have to have the right operand type. Only then you will get the mos...
Display two files side by side
...
You can use pr to do this, using the -m flag to merge the files, one per column, and -t to omit headers, eg.
pr -m -t one.txt two.txt
outputs:
apple The quick brown fox..
pear foo
longer line than the last two bar
last ...
Is there ever a time where using a database 1:1 relationship makes sense?
...
A 1:1 relationship typically indicates that you have partitioned a larger entity for some reason. Often it is because of performance reasons in the physical schema, but it can happen in the logic side as well if a large chunk of the data is expected to be "unknown" at the same time (i...