{"id":139623,"date":"2022-05-20T11:44:54","date_gmt":"2022-05-20T15:44:54","guid":{"rendered":"https:\/\/ibkrcampus.com\/?p=139623"},"modified":"2022-11-21T09:54:43","modified_gmt":"2022-11-21T14:54:43","slug":"robservations-30-fixing-rs-messy-string-concatenation-with-a-special-function","status":"publish","type":"post","link":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/robservations-30-fixing-rs-messy-string-concatenation-with-a-special-function\/","title":{"rendered":"RObservations #30: Fixing R&#8217;s &#8220;Messy String Concatenation&#8221; with a Special\u00a0Function"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"h-introduction\">Introduction<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Recently I discovered&nbsp;<a href=\"https:\/\/stackshare.io\/stackups\/trending\">stackshare.io\u2019s stackups<\/a>&nbsp;which offers comparisons of different programming languages as well as their pros and cons. While looking at the all too classic comparison available between&nbsp;<a href=\"https:\/\/stackshare.io\/stackups\/python-vs-r-language\">R and Python<\/a>&nbsp;I noticed that one of the cons listed was:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1100\" height=\"130\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-messy-syntax-sample-1100x130.png\" alt=\"\" class=\"wp-image-139749 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-messy-syntax-sample-1100x130.png 1100w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-messy-syntax-sample-700x83.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-messy-syntax-sample-300x35.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-messy-syntax-sample-768x91.png 768w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-messy-syntax-sample.png 1442w\" data-sizes=\"(max-width: 1100px) 100vw, 1100px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1100px; aspect-ratio: 1100\/130;\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Messy syntax for string concatenation\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">While it is possible to use the&nbsp;<code>paste()<\/code>&nbsp;or&nbsp;<code>paste0()<\/code>&nbsp;for string concatenation. I do understand how it can be messy to deal with, especially when working with loops and\/or nested functions. In this short blog I share a remedy for this by writing a special function which can lend for cleaner code as opposed to using&nbsp;<code>paste()<\/code>&nbsp;or&nbsp;<code>paste0()<\/code>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Code<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Suppose we are interested in printing out iteratively a list of numbers each appended to a string. Using base R this can either be accomplished with a simple for-loop:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1100\" height=\"141\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-1100x141.png\" alt=\"\" class=\"wp-image-139746 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-1100x141.png 1100w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-700x90.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-300x38.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-768x98.png 768w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample.png 1436w\" data-sizes=\"(max-width: 1100px) 100vw, 1100px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1100px; aspect-ratio: 1100\/141;\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>## This is the number 1\n## This is the number 2\n## This is the number 3\n## This is the number 4\n## This is the number 5\n## This is the number 6\n## This is the number 7\n## This is the number 8\n## This is the number 9\n## This is the number 10<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">While it is simple enough, the code does already look cramped with the nesting of&nbsp;<code>paste0()<\/code>&nbsp;within&nbsp;<code>cat()<\/code>. To have a cleaner set up, as found in python, java and other languages, its possible to write a special function which serves as a wrapper to&nbsp;<code>paste0<\/code>. The code is:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1100\" height=\"146\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-code-2-1100x146.png\" alt=\"\" class=\"wp-image-139751 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-code-2-1100x146.png 1100w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-code-2-700x93.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-code-2-300x40.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-code-2-768x102.png 768w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/r-bennstats-sample-code-2.png 1444w\" data-sizes=\"(max-width: 1100px) 100vw, 1100px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1100px; aspect-ratio: 1100\/146;\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">When used instead of&nbsp;<code>paste0<\/code>&nbsp;in the same example, we have a cleaner looking syntax:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1100\" height=\"137\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-r-code-sample-3-1100x137.png\" alt=\"\" class=\"wp-image-139754 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-r-code-sample-3-1100x137.png 1100w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-r-code-sample-3-700x87.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-r-code-sample-3-300x37.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-r-code-sample-3-768x95.png 768w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/05\/bennstats-r-code-sample-3.png 1434w\" data-sizes=\"(max-width: 1100px) 100vw, 1100px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1100px; aspect-ratio: 1100\/137;\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>## This is the number 1\n## This is the number 2\n## This is the number 3\n## This is the number 4\n## This is the number 5\n## This is the number 6\n## This is the number 7\n## This is the number 8\n## This is the number 9\n## This is the number 10<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">While it is possible to alter the&nbsp;<code>+<\/code>&nbsp;operator in R to accommodate string concatenation, writing a script which will handle the edge cases and be a consistent operator is something which I (and anyone else) should be wary of when experimenting with it. Having a special function which basically serves as a wrapper for&nbsp;<code>paste0()<\/code>&nbsp;allows me to have an operator which is specific to string concatenation and won\u2019t harm the rest of R\u2019s functionality and my trust in the&nbsp;<code>+<\/code>&nbsp;operator.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This function definitely would be something I would include in a R package, but if you beat me to it and make it before I do, please let me know and be sure to mention this blog!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Visit Bensstats Blog for additional insight on this topic and subscribe to his newsletter:<\/em> <em><a href=\"https:\/\/bensstats.wordpress.com\/2022\/04\/21\/robservations-30-fixing-rs-messy-string-concatenation-with-a-special-function\/\">https:\/\/bensstats.wordpress.com\/2022\/04\/21\/robservations-30-fixing-rs-messy-string-concatenation-with-a-special-function\/<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this short blog I share a remedy for this by writing a special function which can lend for cleaner code as opposed to using paste() or paste0().<\/p>\n","protected":false},"author":776,"featured_media":139758,"comment_status":"closed","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[339,343,349,338,341,344,342],"tags":[806,1006,487,6591],"contributors-categories":[13739],"class_list":["post-139623","post","type-post","status-publish","format-standard","has-post-thumbnail","category-data-science","category-programing-languages","category-python-development","category-ibkr-quant-news","category-quant-development","category-quant-regions","category-r-development","tag-data-science","tag-fintech","tag-r","tag-rstats","contributors-categories-bensstats"],"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v27.8) - 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