...re-computed indexes for various columns to accelerate operations like data selection and merges. In this case (database joins) pandas' DataFrame contains no pre-computed information that is being used for the merge, so to speak it's a "cold" merge. If I had stored the factorized versions of the join...

... draw textured rectangles and bars with ggplot2. # Image/pattern randomly selected from README path_image <- "http://www.hypergridbusiness.com/wp-content/uploads/2012/12/rocks2-256.jpg" library(ggplot2) # devtools::install_github("clauswilke/ggtextures") ggplot(mtcars, aes(cyl, mpg)) + ggtex...

...on, that composition is associative, and so on. In C#, "Bind" is called "SelectMany". Take a look at how it works on the sequence monad. We need to have two things: turn a value into a sequence and bind operations on sequences. As a bonus, we also have "turn a sequence back into a value". Those op...

...ndent types is via path-dependent types. These allow a type to depend on a selector path through an object- (ie. value-) graph like so, scala> class Foo { class Bar } defined class Foo scala> val foo1 = new Foo foo1: Foo = Foo@24bc0658 scala> val foo2 = new Foo foo2: Foo = Foo@6f7f757 s...

...lways found profilers not so useful for fixing slow code, and instead used selective bits of debugging code to measure the time taken by a group of statements of my choosing, often aided by some trivial little macros or whatever. It's never taken me too long to find the culprit, but I've always bee...

...ric so in menuconfig I do: Operating System Version of linux so I select: 4.14.71 which is the first equal or older version. It has to be older since the kernel is backwards compatible. Now you can build with: env -u LD_LIBRARY_PATH time ./ct-ng build CT_JOBS=`nproc` and now wait for...

...d be Democrats or Republicans. They are also either male or female. If we select one senator completely randomly, what is the probability that this person is a female Democrat? Conditional Probability can help us answer that. Probability of (Democrat and Female Senator)= Prob(Senator is Democrat) ...

...ded with KO, they have a dblClick event binded that when fired, remove the selected item from the current list and add it to the other list, when you post to the Controller, the content of each list is sent as JSON data and re-attached to the server model Nuggets: Newtonsoft jQuery knockoutjs Knock...

...o use a built-in function of your DBMS (if available). For Oracle SQL> select to_char(to_date(873,'J'), 'JSP') as converted_form from dual; CONVERTED_FORM --------------------------- EIGHT HUNDRED SEVENTY-THREE SQL> 'JSP' means : J : the Julian format. SP : spells the word for the number pa...

.... */ private int bottomOffsetPixels; /** * A currently selected marker */ private Marker marker; /** * Our custom view which is returned from either the InfoWindowAdapter.getInfoContents * or InfoWindowAdapter.getInfoWindow */ private View infoW...