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Understanding what 'type' keyword does in Scala
...e-checking is performed.
But you can also have something like this
trait Base {
type T
def method: T
}
class Implementation extends Base {
type T = Int
def method: T = 42
}
Like any other member of a class, type members can also be abstract (you just don't specify what their value act...
grep using a character vector with multiple patterns
...
%like% isn't in base R, so you should mention what package(s) are needed to use it.
– Gregor Thomas
Nov 1 '18 at 16:39
1
...
淘宝网采用什么技术架构来实现网站高负载的 - 更多技术 - 清泛网 - 专注C/C...
...时候我们就需要避免采用数据的ACID事 务策略，转而采用BASE事 务策略，BASE事 务策略是基本可用性，事务软状态以及最终一致性的缩写，通过BASE事务策略，我们可以通过最终一致性来提升系统的可用性，这也是目前很多NOSQL产品...
How do I get only directories using Get-ChildItem?
...sions less than 3.0:
The FileInfo object returned by Get-ChildItem has a "base" property, PSIsContainer. You want to select only those items.
Get-ChildItem -Recurse | ?{ $_.PSIsContainer }
If you want the raw string names of the directories, you can do
Get-ChildItem -Recurse | ?{ $_.PSIsContain...
Check if option is selected with jQuery, if not select a default
...is quite a bit easier to understand, especially if one does not understand base JavaScript.
– shmeeps
Jul 22 '11 at 16:29
6
...
Unix - create path of folders and file
...
You need to make all of the parent directories first.
FILE=./base/data/sounds/effects/camera_click.ogg
mkdir -p "$(dirname "$FILE")" && touch "$FILE"
If you want to get creative, you can make a function:
mktouch() {
if [ $# -lt 1 ]; then
echo "Missing argument...
Haskell testing workflow
...eal with cabal test and cabal bench, mixing HUnit, doctest, and quickcheck based tests with criterion benchmarks. The code in speculation predates cabal test and cabal bench.
– Edward KMETT
Nov 2 '12 at 17:02
...
UITableView Setting some cells as “unselectable”
...RowAtIndexPath:(NSIndexPath *)path
{
// Determine if row is selectable based on the NSIndexPath.
if (rowIsSelectable) {
return path;
}
return nil;
}
This prevents the row from being selected and tableView:didSelectRowAtIndexPath: from being called. Note, however, that this...
nano error: Error opening terminal: xterm-256color
...rying to use top inside a minikube local kubernetes system running as a VM based on buildroot inside Virtualbox on Max OS X. (which is ssh from MacOS into a Buildroot based VM and tgen run top)
– Henning
Aug 10 '17 at 14:50
...
Extract a substring according to a pattern
..._ as a separator and made two separate variables for the prefix and suffix based on @Grothendieck answer: prefix <- sub("_.*", "", variable) and suffix <- sub(".*_", "", variable)
– swihart
Nov 13 '15 at 19:45
...