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How to drop a database with Mongoose?
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Since all collections are in the hash mongoose.connection.collections, you might simply list them for ( collection in mongoose.connection.collections ) { mongoose.connection.collections[collection].drop } ... smth similar
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What is the difference between “def” and “val” to define a function
...ion every time (new instance of Function1).
def even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = false
val even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = true
With def you can get new function on every call:
val test: () => Int = {
val r = util.Random.nextInt
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With arrays, why is it the case that a[5] == 5[a]?
... on here than elementary school arithmetic. The commutativity relies critically on the compiler recognizing which operand is a pointer (and to what size of object). To put it another way, (1 apple + 2 oranges) = (2 oranges + 1 apple), but (1 apple + 2 oranges) != (1 orange + 2 apples).
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Alias with variable in bash [duplicate]
...or that, rather than alias, and then exported it, like this:
function tail_ls { ls -l "$1" | tail; }
export -f tail_ls
Note -f switch to export: it tells it that you are exporting a function. Put this in your .bashrc and you are good to go.
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Ternary Operator Similar To ?:
...or that we just defined:
object T { val condition = true
import Bool._
// yay!
val x = condition ? "yes" | "no"
}
Have fun ;)
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Use of def, val, and var in scala
...sed:
scala> something = 5 * 6
<console>:8: error: value something_= is not a member of object $iw
something = 5 * 6
^
When the class is defined like:
scala> class Person(val name: String, var age: Int)
defined class Person
and then instantiated with:
scala> def pe...
Converting a JS object to an array using jQuery
... 2:[Array-Data]}] And $.map() also doesn't look successful. It seams, that all Sub-Array data is merged to one array. array.length should return 2 (because 2 elements exists), but it returns 67 which is the number of all elements in all ["Array-Data"].
– The Bndr
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Shortcut to switch between design and text in Android Studio
... On windows it is ATL+SHIFT+RIGHT/LEFT
– vijay_t
Dec 18 '15 at 12:11
This answer shows the key command to searc...
How to get a substring between two strings in PHP?
...ieves that. I do not want to think about regex (well, I could do one but really don't think it's the best way to go). Thinking of strpos and substr functions.
Here's an example:
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Convert decimal to hexadecimal in UNIX shell script
...e=16; 123456" | bc. So the way to deal with arbitrary numbers of integers all on one line is to put each number on its own line: tr ' ' '\015' <input | bc (map blanks to newlines).
– Jonathan Leffler
Dec 25 '08 at 20:40
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