practical migrating guide to crystal-0.20.0 https://crystal-lang.org/2016/11/22/crystal-0.20.0-released.html

0.general.sh

#!/usr/bin/env zsh
set -e

# for shards-0.7
rm -rf shard.lock libs
shards update
echo "/lib/" >> .gitignore

# MemoryIO
sed -i "s/MemoryIO/IO::Memory/g" {src,spec}/**/*.cr

1.lang.md

ifdef [REMOVED]

• Use flag? instead.

-ifdef linux
+{% if flag?(:linux) %}

• https://github.com/maiha/crt.cr/commit/661ab6eacb0c8aea692ad603caf2e6d89d4c5110

HTTP::Request [CHANGED]

• The body type is changed from String? to IO?

no overload matches 'Array(String)#<<' with type (HTTP::ChunkedContent | HTTP::Server::Response | HTTP::Server::Response::Output | HTTP::UnknownLengthContent | HTTP::WebSocket::Protocol::StreamIO | IO::ARGF | IO::Delimited | IO::FileDescriptor | IO::Hexdump | IO::Memory | IO::MultiWriter | IO::Sized | JSON::PrettyWriter | OpenSSL::SSL::Socket | String::Builder | Zlib::Deflate | Zlib::Inflate)

-      ary << req.body.not_nil! if req.body
+      ary << req.body.not_nil!.gets_to_end if req.body

2.tools.md

crenv

• update is essential (supported in master branch)

kemal

• works with 0.17.0

x.github-maiha.md

github/maiha

status

• crc16.cr
• crt.cr
• dstat-redis.cr
• grafana-redis.cr
• hq.cr
• jq.cr
• kafka.cr
• opts.cr
• pcap.cr
• rcm.cr
• redis-cluster-benchmark.cr
• redis-cluster.cr
• redis-protocol.cr
• redis-tsv.cr
• shard.cr
• toml-config.cr
• traildb.cr
• try.cr

@maiha This is not correct:

-      ary << req.body.not_nil! if req.body
+      ary << req.body.not_nil!.to_s if req.body

You should use req.body.not_nil!.gets_to_end

It might work by accident if the body is an IO::Memory, because its to_s returns the string contents, but in the general case you should use gets_to_end

@asterite Oh, I see. Thanks! 😄