![\"editing](\"http:\/\/www.numbas.org.uk\/wp-content\/uploads\/2014\/11\/editing-history1.png\")
<\/p>\nHere’s another round-up of recent development work on Numbas.<\/p>\n
The big new feature is version tracking – every change made to a Numbas question or exam is saved in the database, and you can revert to old versions in the new “Editing history” tab. Each version is stamped with the time of its creation and the name of the person who made the change. You can also add your own comment to a version to describe what you’ve changed.<\/p>\n
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The editor now also has undo\/redo buttons for changes made since you opened the page, so you can quickly rewind if you do something silly like delete a part or variable.<\/p>\n
This should make maintaining questions and collaborating on question development a\u00a0lot<\/em> easier!<\/p>\n Here’s another round-up of recent development work on Numbas. Version tracking The big new feature is version tracking – every change made to a Numbas question or exam is saved in the database, and you can revert to old versions in the new “Editing history” tab.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/www.numbas.org.uk\/theme-testing\/wp-json\/wp\/v2\/posts\/703"}],"collection":[{"href":"https:\/\/www.numbas.org.uk\/theme-testing\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.numbas.org.uk\/theme-testing\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.numbas.org.uk\/theme-testing\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.numbas.org.uk\/theme-testing\/wp-json\/wp\/v2\/comments?post=703"}],"version-history":[{"count":0,"href":"https:\/\/www.numbas.org.uk\/theme-testing\/wp-json\/wp\/v2\/posts\/703\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.numbas.org.uk\/theme-testing\/wp-json\/wp\/v2\/media?parent=703"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.numbas.org.uk\/theme-testing\/wp-json\/wp\/v2\/categories?post=703"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.numbas.org.uk\/theme-testing\/wp-json\/wp\/v2\/tags?post=703"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Other changes<\/h3>\n
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Numbas.math.rationalApproximation<\/code> halts its algorithm when it gets within the desired range of a whole number. If the number you feed in is already within that range but not exactly an integer, it had no steps to reconstruct and returned [1,0]<\/code>. Now it correctly returns [n,1]<\/code>. (code<\/a>)<\/li>\nNumbas.math.niceNumber<\/code> rounds numbers smaller than 1E-15 to 0. (code<\/a>)<\/li>\nNumbas.math.precround<\/code> only rounds the fractional part of the number it’s given, instead of working on the whole number. This reduces the size of floating point errors introduced during the process. (code<\/a>)<\/li>\nNumbas.jme.subvars<\/code> renders numbers in scientific notation in JME syntax, not javascript’s. (code<\/a>)<\/li>\ndistinct<\/code> uses Numbas.util.eq<\/code> to test for duplicates instead of JavaScript’s equality operator. This means it works on all JME data types, not just ones which have analogues in JavaScript. (code<\/a>)<\/li>\n