{"id":1448,"date":"2020-02-23T07:45:35","date_gmt":"2020-02-23T07:45:35","guid":{"rendered":"https:\/\/golangbyexamples.com\/?p=1448"},"modified":"2020-03-10T19:08:03","modified_gmt":"2020-03-10T19:08:03","slug":"parse-string-representation-float-go","status":"publish","type":"post","link":"https:\/\/golangbyexamples.com\/parse-string-representation-float-go\/","title":{"rendered":"Parse a string to float in Go (Golang)"},"content":{"rendered":"\n<p class=\"has-medium-font-size\"><strong>strconv.ParseFloat()<\/strong> function can be used to parse a string representation of a float<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><a href=\"https:\/\/golang.org\/pkg\/strconv\/#ParseFloat\">https:\/\/golang.org\/pkg\/strconv\/#ParseFloat<\/a><\/p>\n\n\n\n<p class=\"has-medium-font-size\">Below is the signature of the function<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">func ParseFloat(s string, bitSize int) (float64, error) <\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><br>Some points worth noting<\/p>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li>The first argument is the string representation of a float<\/li><\/ul>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li>The second argument is the bitSize which specifies the precision. It is 32 for float32 and 64 for float64<\/li><\/ul>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li>The return value will always be float64 but will be convertible to float32 without any change in its value.<\/li><\/ul>\n\n\n\n<p class=\"has-medium-font-size\">Let&#8217;s see a working code<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\nimport (\n    \"fmt\"\n    \"strconv\"\n)\n\nfunc main() {\n    e1 := \"1.3434\"\n    if s, err := strconv.ParseFloat(e1, 32); err == nil {\n        fmt.Printf(\"%T, %v\\n\", s, s)\n    }\n    if s, err := strconv.ParseFloat(e1, 64); err == nil {\n        fmt.Printf(\"%T, %v\\n\", s, s)\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Output<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">float64, 1.343400001525879\nfloat64, 1.3434<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>strconv.ParseFloat() function can be used to parse a string representation of a float https:\/\/golang.org\/pkg\/strconv\/#ParseFloat Below is the signature of the function Some points worth noting The first argument is the string representation&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[1],"tags":[],"class_list":["post-1448","post","type-post","status-publish","format-standard","hentry","category-tech"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - 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