...- configuration files (XML, .conf, and so on), inheritance frameworks, database information, libraries, and others. In my experience: ...

... not sure it is the cleanest way, but with only "base" functions, this should work if you have duplicates in df: df <- data.frame(name=letters[c(1:4, 1:4)], value=c(rep(TRUE, 2), rep(FALSE, 2),rep(TRUE, 2), rep(FALSE, 2) )) target <- c("b", "c", "a", "d") df[order...

...the script client_login.php All the domains have a shared user session database. When the client domain requires the user to be logged in, it redirects to the master domain (login.mydomain.com/master_login.php). If the user has not signed in to the master it requests authentication from the user (ie...

...n a Mongo find() query without any sort order specified, what does the database internally use to sort the results? 2 Answe...

... view automatically asks each cell what height its contentView needs to be based on the known fixed width of the content view (which is based on the table view's width, minus any additional things like a section index or accessory view) and the auto layout constraints you have added to the cell's co...

...re Void Elements so they do not need an end tag. Void elements area, base, br, col, command, embed, hr, img, input, keygen, link, meta, param, source, track, wbr ... Void elements only have a start tag; end tags must not be specified for void elements. W3C | WHATWG That being said it...

...rts about activity on your site. GTM is a tag manager that can output tags based on defined rules. So for example, you can either implement your GA code on your site directly, or you can implement the GTM code and use GTM to output the GA code. The main benefit of GTM (or any tag manager worth an...

...tire data structure, according to some strategy (top-down, bottom-up), and based on rules that match against the value at some point in the structure. The classical example is transforming an AST for a language, perhaps to evaluate, simplify, or collect information. Kiama supports Rewriting, see the...

...p the empty prefix to avoid corner-cases. You can optimize your prefix database by discarding all those prefixes whose parent shares the same "a" or "an" annotation. When determining whether to use "A" or "AN" find the longest matching prefix, and follow its lead. If you didn't discard the empty pr...

... this is so cool knowing that you can select every attribute and attribute based on their value like href based on their values with CSS only.. Attributes selectors allows you play around some extra with id and class attributes Here is an awesome read on Attribute Selectors Fiddle a[href="ht...