Tutorial by Examples: o

After finding an official Julia package, it is straightforward to download and install the package. Firstly, it's recommended to refresh the local copy of METADATA: julia> Pkg.update() This will ensure that you get the latest versions of all packages. Suppose that the package we want to inst...

Sometimes, the latest tagged version of a package is buggy or is missing some required features. Advanced users may wish to update to the latest development version of a package (sometimes referred to as the "master", named after the usual name for a development branch in Git). The benefit...

Using an AppCompat theme, the ProgressBar's color will be the colorAccent you have defined. 5.0 To change the ProgressBar color without changing the accent color you can use theandroid:theme attribute overriding the accent color: <ProgressBar android:theme="@style/MyProgress" ...

According to Material Documentation: A linear progress indicator should always fill from 0% to 100% and never decrease in value. It should be represented by bars on the edge of a header or sheet that appear and disappear. To use a material Linear ProgressBar just use in your xml: <Progres...

This example covers common errors with using the 'java' command. "Command not found" If you get an error message like: java: command not found when trying to run the java command, this means that there is no java command on your shell's command search path. The cause could be: yo...

Animation curves allows you to change a float parameter as the animation plays. For example, if there is an animation of length 60 seconds and you want a float value/parameter, call it X, to vary through the animation (like at animation time = 0.0s; X = 0.0 , at animation time = 30.0s; X = 1.0, at...

Buttons are one of the simplest controls and mostly used for executing some code when the user wants. Here we have a really simple case, show a Message box when a button is clicked. We add a button to a form, name it cmdShowMessage as used in code to identify the object and set the buttons text to ...

TextBoxes allow the user to input data into the program. We are going to modify the form and add a textbox so the messagebox show us the message that the user wants. Now our form looks like: And then modify the button click event to use the text of the textbox: private void cmdShowMessage_Click...

ComboBoxes allow the user to choose one of various options provided by the developer. We are going to modify the form and add a combobox so the messagebox show us the message that the user want from a list that we will provide. After adding the combo to the form we now add a list of options to the...

WampServer is a Windows web development environment. It allows you to create web applications with Apache2, PHP and a MySQL database. Alongside, PhpMyAdmin allows you to manage easily your databases. WampServer is available for free (under GPML license) in two distinct versions : 32 and 64 bits. Wa...

String macros are syntactic sugar for certain macro invocations. The parser expands syntax like mymacro"my string" into @mymacro_str "my string" which then, like any other macro call, gets substituted with whatever expression the @mymacro_str macro returns. Base Julia com...

Julia Symbol literals must be legal identifiers. This works: julia> :cat :cat But this does not: julia> :2cat ERROR: MethodError: no method matching *(::Int64, ::Base.#cat) Closest candidates are: *(::Any, ::Any, ::Any, ::Any...) at operators.jl:288 *{T<:Union{Int128,Int16,Int...

This is a continuation of the "main class" and "executable JAR" examples. Typical Java applications consist of an application-specific code, and various reusable library code that you have implemented or that has been implemented by third parties. The latter are commonly referr...

Search for a lemma when you know what its conclusion ought to be: Coq < SearchPattern (S _ <= _). le_n_S: forall n m : nat, n <= m -> S n <= S m You can also search on a partial conclusion (the conclusion and one or several last hypotheses). Coq < Require Import Arith. Coq &...

If you use the TeX Live distribution you can use the command-line program texdoc. For instance, texdoc biblatex will open the documentation of package biblatex. Or if you are not command-line-savvy, the same can be found online at http://www.texdoc.net/

Depending on the service, you will either need to use Basic Authentication with a username and password or pass an apikey as a parameter in each request. Some services also support token authentication. GET using Tone Analyzer: curl -X GET \ -u "username":"password" \ -d &qu...

The quickest way to get started with Watson services is to use the Watson Developer Cloud SDKs. The following GitHub repositories contain installation instructions and basic usage examples: Android iOS Java Node.js Python Unity For example, here's how to make an AlchemyLanguage API call w...

Groups can be configured under Suite and/or Test element of testng.xml. All groups which are marked as included in tesng.xml will be considered for execution, excluded one will be ignored. If a @Test method has multiple groups and from those groups if any single groups is excluded in testng.xml that...

How does an RDD gets partitioned? By default a partition is created for each HDFS partition, which by default is 64MB. Read more here. How to balance my data across partitions? First, take a look at the three ways one can repartition his data: Pass a second parameter, the desired min...

trait Speak { fn speak(&self) -> String { String::from("Hi.") } } The method will be called by default except if it's overwritten in the impl block. struct Human; struct Cat; impl Speak for Human {} impl Speak for Cat { fn speak(&self) -> S...