I hereby claim:
- I am fukaoi on github.
- I am fukaoi (https://keybase.io/fukaoi) on keybase.
- I have a public key ASCUo-T8fcPOYbwnpufKBq85MsJs_sMYCq8i3C1Hxx-h3Qo
To claim this, I am signing this object:
class String | |
def unpack(format : String) : Array | |
io = IO::Memory.new(self) | |
slice = Bytes.new(self.size) | |
io.read(slice) | |
[slice.hexstring] | |
end | |
end | |
class Array |
I hereby claim:
To claim this, I am signing this object:
docker run -d -p 5432:5432 -v /var/run/postgresql/:/var/run/postgresql/ --name mypost postgres |
## default | |
>electrum-ltc create --testnet -w ~/Desktop/wallet | |
<<Password (hit return if you do not wish to encrypt your wallet): | |
>>test | |
<<Confirm: | |
>>test | |
## set env parameter |
module Demo | |
STRUCT = [ | |
Bool, Char, Symbol, | |
Int8, Int16, Int32, Int64, Int128, | |
Float32, Float64 | |
] | |
macro define_struct | |
{% for s in STRUCT %} | |
struct {{ s.id }} |
### これだとMacro?生成ができないのか、 ``` undefined constant Crystal::Env``` | |
### [NG] | |
require "env" | |
### 代替手段 | |
### [OK] | |
require "env/core" |
class A | |
def disp : String | |
"call A" | |
end | |
end | |
class B | |
def disp : String | |
"call B" | |
end |
abstract class Parent #同じシグネチャなので、abstractを通して、制約をつける | |
abstract def disp | |
end | |
class A < Parent | |
def disp : String | |
"call A" | |
end | |
end |
class Demo | |
@obj: Coin | |
def initialize(name : String) | |
if name == "LTC" | |
@obj = LTC.new | |
elsif name == "ETH" | |
@obj = ETH.new | |
else | |
raise "Not found name" | |
end |
#!/bin/bash | |
DATE=`date "+%s"` | |
echo $DATE | |
DATE2=$(($DATE*2)) | |
echo $DATE2 | |
aws logs put-log-events --log-group-name scorpio --log-stream-name app --log-events timestamp=$DATE2,message="Test event 1" --sequence-token $1 |