[B! debug][ruby] ymm1xã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

ymm1x id:ymm1x

debugã¨rubyã«é–¢ã™ã‚‹ymm1xã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (7)

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Kernel.#trace_var (Ruby 3.3 ãƒªãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ãƒžãƒ‹ãƒ¥ã‚¢ãƒ«)
trace_var(varname, hook) -> nil[permalink][rdoc][edit] trace_var(varname) {|new_val| .... } -> nil trace_var(varname, hook) -> [String|Proc] ã‚°ãƒãƒ¼ãƒãƒ«å¤‰æ•° varname ã¸ã®ä»£å…¥ã®ãƒ•ãƒƒã‚¯ã‚’ç™»éŒ²ã—ã¾ã™ã€‚ ã“ã“ã§ã®ã€Œã‚°ãƒãƒ¼ãƒãƒ«å¤‰æ•°ã€ã¯ã€ç‰¹æ®Šå¤‰æ•° (å¤‰æ•°ã¨å®šæ•°/çµ„ã¿è¾¼ã¿å¤‰æ•° ã‚’å‚ç…§)ã‚‚å«ã‚ãŸ `$' ã§å§‹ã¾ã‚‹å¤‰æ•°ã®ã“ã¨ã§ã™ã€‚ ã“ã®å‘¼ã³å‡ºã—ä»¥é™ã€varname ã§æŒ‡å®šã—ãŸã‚°ãƒãƒ¼ãƒãƒ«å¤‰æ•°ã«å€¤ãŒä»£å…¥ã•ã‚Œã‚‹ãŸã³ã« hook ã‹ãƒ–ãƒãƒƒã‚¯ãŒè©•ä¾¡ã•ã‚Œã¾ã™ã€‚hook ãŒ Proc ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®å ´åˆä»£å…¥ã•ã‚ŒãŸå€¤ãŒãƒ–ãƒãƒƒã‚¯å¼•æ•°ã«æ¸¡ã•ã‚Œã¾ã™ã€‚æ–‡å—åˆ—ã®å ´åˆã¯Rubyã‚³ãƒ¼ãƒ‰ã¨ã—ã¦è©•ä¾¡ã•ã‚Œã¾ã™ã€‚ trace_var ãŒãƒ•ãƒƒã‚¯ã™ã‚‹ã®ã¯æ˜Žç¤ºçš„ãªä»£å…¥ã ã‘ã§ã™ã€‚ãƒ•ãƒƒã‚¯ã¯è¤‡æ•°ç™»éŒ²ã§ãã¾ã™ã€‚
ymm1x 2021/06/20
ruby

debug
ãƒªãƒ³ã‚¯
Kernel.#caller (Ruby 3.3 ãƒªãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ãƒžãƒ‹ãƒ¥ã‚¢ãƒ«)
caller(start = 1) -> [String] | nil[permalink][rdoc][edit] caller(start, length) -> [String] | nil caller(range) -> [String] | nil start æ®µä¸Šã®å‘¼ã³å‡ºã—å…ƒã®æƒ…å ±ã‚’ $@ ã®å½¢å¼ã®ãƒãƒƒã‚¯ãƒˆãƒ¬ãƒ¼ã‚¹(æ–‡å—åˆ—ã®é…åˆ—)ã¨ã—ã¦è¿”ã—ã¾ã™ã€‚ ãƒˆãƒƒãƒ—ãƒ¬ãƒ™ãƒ«ã§ã¯ç©ºã®é…åˆ—ã‚’è¿”ã—ã¾ã™ã€‚caller ã®æˆ»ã‚Šå€¤ã‚’ $@ ã«ä»£å…¥ã™ã‚‹ã“ã¨ã§ä¾‹å¤–ã®ç™ºç”Ÿä½ç½®ã‚’è¨å®šã§ãã¾ã™ã€‚ å¼•æ•°ã§æŒ‡å®šã—ãŸå€¤ãŒç¯„å›²å¤–ã®å ´åˆã¯ nil ã‚’è¿”ã—ã¾ã™ã€‚ [PARAM] start: long ã®ç¯„å›²ã‚’è¶…ãˆãªã„æ£ã®æ•´æ•°ã§ã‚¹ã‚¿ãƒƒã‚¯ãƒ¬ãƒ™ãƒ«ã‚’æŒ‡å®šã—ã¾ã™ã€‚ [PARAM] length: å–å¾—ã™ã‚‹ã‚¹ã‚¿ãƒƒã‚¯ã®å€‹æ•°ã‚’æŒ‡å®šã—ã¾ã™ã€‚ [PARAM] range: å–å¾—ã—ãŸã„ã‚¹ã‚¿ãƒƒã‚¯ã®ç¯„å›²ã‚’ç¤ºã™ Range ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’æŒ‡å®šã—ã¾ã™ã€‚
ymm1x 2021/06/20
ruby

debug
ãƒªãƒ³ã‚¯
Rubyã§GETãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚„POSTãƒªã‚¯ã‚¨ã‚¹ãƒˆã—ãŸæ™‚ã®ãƒ¡ãƒ¢ - Qiita
var http = require('http'); var server = http.createServer(function (req,res) { // confirm request console.log(`headers: ${JSON.stringify(req.headers)}`); console.log(`httpVersion: ${req.httpVersion}`); console.log(`method: ${req.method}`); console.log(`url: ${req.url}`); // response res.writeHeader(200, {'Content-Type': 'application/json'}); res.end(JSON.stringify({ 'foo': 'bar'})); }); server.li
ymm1x 2021/06/19
Node.js ã§ç¢ºèªç”¨ã‚µãƒ¼ãƒãƒ¼ã‚’ç«‹ã¦ã¦å®Ÿéš›ã«é€ä¿¡ã•ã‚Œã‚‹ãƒ˜ãƒƒãƒ€ãªã©ã‚’ç¢ºèª

##

ruby

node.js

debug
ãƒªãƒ³ã‚¯
Object#tap (Ruby 3.3 ãƒªãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ãƒžãƒ‹ãƒ¥ã‚¢ãƒ«)
tap {|x| ... } -> self[permalink][rdoc][edit] self ã‚’å¼•æ•°ã¨ã—ã¦ãƒ–ãƒãƒƒã‚¯ã‚’è©•ä¾¡ã—ã€self ã‚’è¿”ã—ã¾ã™ã€‚ ãƒ¡ã‚½ãƒƒãƒ‰ãƒã‚§ã‚¤ãƒ³ã®é€”ä¸ã§ç›´ã¡ã«æ“ä½œçµæžœã‚’è¡¨ç¤ºã™ã‚‹ãŸã‚ã«ãƒ¡ã‚½ãƒƒãƒ‰ãƒã‚§ã‚¤ãƒ³ã« "å…¥ã‚Šè¾¼ã‚€" ã“ã¨ãŒã€ã“ã®ãƒ¡ã‚½ãƒƒãƒ‰ã®ä¸»ç›®çš„ã§ã™ã€‚ (1..10) .tap {|x| puts "original: #{x}" } .to_a .tap {|x| puts "array: #{x}" } .select {|x| x.even? } .tap {|x| puts "evens: #{x}" } .map {|x| x*x } .tap {|x| puts "squares: #{x}" } [SEE_ALSO] Object#yield_self
ymm1x 2021/03/24
ruby

debug
ãƒªãƒ³ã‚¯
Rubyã§ãƒ¡ã‚½ãƒƒãƒ‰ã®å®šç¾©å ´æ‰€ã‚’è¦‹ã¤ã‘ã‚‹æ–¹æ³• - Qiita
Rubyã¯Moduleã§çµ„ã¿è¾¼ã¾ã‚ŒãŸãƒ¡ã‚½ãƒƒãƒ‰ã‚„ã€method_missingã‚’åˆ©ç”¨ã—ãŸã€Œã‚´ãƒ¼ã‚¹ãƒˆãƒ¡ã‚½ãƒƒãƒ‰ã€ãªã©ã€è‡ªåˆ†ã®è¦‹ã¦ã„ã‚‹ãƒ¡ã‚½ãƒƒãƒ‰ãŒãã®ã‚¯ãƒ©ã‚¹ä»¥å¤–ã®ã©ã“ã§å®šç¾©ã•ã‚Œã¦ã„ã‚‹ã®ã‹ã€åˆ†ã‹ã‚Šã«ãã„ã‚±ãƒ¼ã‚¹ãŒã‚ˆãã‚ã‚Šã¾ã™ã€‚ ç‰¹ã«Javaã‚„C#ã‹ã‚‰ç§»ã£ã¦ããŸåƒ•ã®ã‚ˆã†ãªãƒ—ãƒã‚°ãƒ©ãƒžã¯ã€ã€Œãƒ¡ã‚½ãƒƒãƒ‰ = ã©ã“ã‹ã®ã‚¯ãƒ©ã‚¹ã§å®šç¾©ã•ã‚Œã¦ã„ã‚‹ã‚‚ã®ã€ã¨ã„ã†å°è±¡ãŒå¼·ã„ã®ã§ã€ã€ŒæŒã¡ä¸»ãŒã‚ˆãåˆ†ã‹ã‚‰ãªã„ãƒ¡ã‚½ãƒƒãƒ‰ã€ã®å˜åœ¨ã¯ãƒ‡ãƒãƒƒã‚°ç‰ã§è‹¦åŠ´ã•ã›ã‚‰ã‚Œã¾ã™ã€‚ ã“ã†ã„ã£ãŸã‚±ãƒ¼ã‚¹ã§ã¯ã€Kernel#methodã¨Method#source_locationã‚’çµ„ã¿åˆã‚ã›ã‚‹ã“ã¨ã§ã€ãƒ¡ã‚½ãƒƒãƒ‰ã®å®šç¾©å ´æ‰€ã‚’è¦‹ã¤ã‘ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ ãŸã¨ãˆã°ã€rails consoleã§blank?ãƒ¡ã‚½ãƒƒãƒ‰ã®å®šç¾©å ´æ‰€ã‚’è¦‹ã¤ã‘ãŸã„å ´åˆã¯ã€ã“ã‚“ãªæ„Ÿã˜ã§ã™ã€‚
ymm1x 2021/03/04
ruby

debug

tips
ãƒªãƒ³ã‚¯
Ruby_ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ãƒªãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ã®æ¦å™¨
ymm1x 2021/03/04
ruby

debug

tips
ãƒªãƒ³ã‚¯
Rubyã§classã‚„constã®å®šç¾©ä½ç½®ã‚’èª¿ã¹ã‚‹æ–¹æ³• - Qiita
> Some = 1 # class (irb):1: warning: already initialized constant Some ./some.rb:123: warning: previous definition of Some was here > Some::VALUE = 1 # const (irb):2: warning: already initialized constant Some ./some.rb:125: warning: previous definition of Some was here èƒŒæ™¯ Rubyã§ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚³ãƒ¼ãƒ‰ã‚’èªã‚“ã§ã„ã‚‹ã¨ã€ã€Œãˆã€ã“ã®class or const(å¤§æ–‡å—è‹±å—ã§å§‹ã¾ã‚‹ã„ã‚ã‚†ã‚‹å®šæ•°)ã®å®šç¾©ä½ç½®ã¯ã©ã“ã ï¼Ÿã€ã¨ã„ã†ç–‘å•ãŒæ¹§ã„ã¦ãã‚‹ã“ã¨ãŒã‚ã‚‹ã¨æ€ã„ã¾ã™ã€‚ ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚³ãƒ¼ãƒ‰ã®å ´åˆã€æ²¢å±±ã®gemã‚’èªã¿è¾¼ã‚“ã§ã„ã‚‹ãŸã‚ã€
ymm1x 2021/03/04
ruby

debug

tips
ãƒªãƒ³ã‚¯
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