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What does “O(1) access time” mean?
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You're going to want to read up on Order of complexity.
http://en.wikipedia.org/wiki/Big_O_notation
In short, O(1) means that it takes a constant time, like 14 nanoseconds, or three minutes no matter the amount of data in the set.
O(n) means it t...
how can I add the aidl file to Android studio (from the in-app billing example)
...age (com.android.vending.billing).
Within the src/main/aidl/ folder you already have, put the .aidl file in com/android/vending/billing/.
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PHP - Check if two arrays are equal
...ther values:
if($array_a == $array_b) {
//they are the same
}
You can read about all array operators here:
http://php.net/manual/en/language.operators.array.php
Note for example that === also checks that the types and order of the elements in the arrays are the same.
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How to pull specific directory with git
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For those that read these comments and don't know how this doesn't answer the question, what this solution does is give you a copy of only that one folder, but it's not a working copy, meaning you can't modify and re-commit. So as @Morgon s...
Pipe output and capture exit status in Bash
...n:
((((someprog; echo $? >&3) | filter >&4) 3>&1) | (read xs; exit $xs)) 4>&1
echo $?
See my answer for the same question on unix.stackexchange.com for a detailed explanation and an alternative without subshells and some caveats.
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How can I get the current user's username in Bash?
...current terminal (ignores EUID)
$USER variable is set correctly only after reading profile files (for example, /etc/profile)
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Turning off auto indent when pasting text into vim
... I like this direct usage option. I'm still learning how to read vim syntax on web pages, though. What do your steps mean? In particular, supposing I have something on the system clipboard, what do I press to paste it into a document in vim?
– jvriesem
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C# Float expression: strange behavior when casting the result float to int
...ng to int instead of parsing?
int speed1 = (int)(6.2f * 10)
would then read
int speed1 = Int.Parse((6.2f * 10).ToString());
The difference is probably to do with rounding: if you cast to double you will probably get something like 61.78426.
Please note the following output
int speed1 = (i...
Swift class introspection & generics
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If I'm reading the documentation right, if you deal with instances and e.g. want to return a new instance of the same Type than the object you have been given and the Type can be constructed with an init() you can do:
let typeOfObj...
Why are hexadecimal numbers prefixed with 0x?
...400 translates to 6*16^3 + 4*16^2 + 0*16^1 +0*16^0 = 25600.
When compiler reads 0x6400, It understands the number is hexadecimal with the help of 0x term. Usually we can understand by (6400)16 or (6400)8 or whatever ..
For binary it would be:
0b00000001
Hope I have helped in some way.
Good d...