Tutorial by Examples: t

# application.rb config.time_zone = 'Eastern Time (US & Canada)' config.active_record.default_timezone = :local

N-bit deep shift register with asynchronous reset. module shift_register #( parameter REG_DEPTH = 16 )( input clk, //clock signal input ena, //enable signal input rst, //reset signal input data_in, //input bit output data_out //output bit ); reg [REG_DE...

Commonly you would use :set to set options to your liking in your .vimrc. There are many options that can be changed. For example, in order to use spaces for indentation: :set expandtab :set shiftwidth=4 :set softtabstop=4

Switch syntax highlighting on, when the terminal has colors if &t_Co > 2 || has("gui_running") syntax on end Show trailing whitespace and tabs. Showing tabs can be especially useful when looking for errors in Makefiles. set list listchars=tab:\|_,trail:. highlight Specia...

When a tabular form is posted, the items in each record are available to PL/SQL code via the "APEX_APPLICATION.G_Fnn" arrays. G_F01 corresponds to the first editable column, G_F02 to the 2nd, and so on. For example, you can loop through each record and access the posted values for each fie...

Every Time you create an anonymous class, it retains an implicit reference to its parent class. So when you write: public class LeakyActivity extends Activity { ... foo.registerCallback(new BarCallback() { @Override public void onBar() { ...

Often you will want to wrap some of Android's classes in easier to use utility classes. Those utility classes often require a context to access the android OS or your apps' resources. A common example of this is a wrapper for the SharedPreferences class. In order to access Androids shared preference...

This is the code for changing output application file name (.apk). The name can be configured by assigning a different value to newName android { applicationVariants.all { variant -> def newName = "ApkName"; variant.outputs.each { output -> def ...

synchronized is a low-level concurrency construct that can help preventing multiple threads access the same resources. Introduction for the JVM using the Java language. anInstance.synchronized { // code to run when the intristic lock on `anInstance` is acquired // other thread cannot enter co...

/* within a class, def, trait or object, but not a constructor */ synchronized { /* code to run when an intrisctic lock on `this` is acquired */ /* no other thread can get the this lock unless execution is suspended with * `wait` on `this` */ }

The GetParentFolderName method returns the parent folder for any path. While this can also be used with folders, it is arguably more useful for extracting the path from an absolute file path: Dim fso As New Scripting.FileSystemObject Debug.Print fso.GetParentFolderName("C:\Users\Me\My Docume...

In some cases it is necessary to calculate a variable amount of values on separate Futures. Assume to have a List[Future[Int]], but instead a List[Int] needs to be processed. Then the question is how to turn this instance of List[Future[Int]] into a Future[List[Int]]. For this purpose there is the s...

Creating a namedtuple with type hints is done using the function NamedTuple from the typing module: import typing Point = typing.NamedTuple('Point', [('x', int), ('y', int)]) Note that the name of the resulting type is the first argument to the function, but it should be assigned to a variable ...

Keeping a GUI responsive while running a lengthy process requires either some very elaborate "callbacks" to allow the GUI to process its message queue, or the use of (background) (worker) threads. Kicking off any number of threads to do some work usually isn't a problem. The fun starts wh...

Start with importing the library. from amqpstorm import Connection When consuming messages, we first need to define a function to handle the incoming messages. This can be any callable function, and has to take a message object, or a message tuple (depending on the to_tuple parameter defined in ...

Start with importing the library. from amqpstorm import Connection from amqpstorm import Message Next we need to open a connection to the RabbitMQ server. connection = Connection('127.0.0.1', 'guest', 'guest') After that we need to set up a channel. Each connection can have multiple channel...

PostgreSQL is an actively developed and mature open source database. Using the psycopg2 module, we can execute queries on the database. Installation using pip pip install psycopg2 Basic usage Lets assume we have a table my_table in the database my_database defined as follows. idfirst_namelast_n...

Loops can be nested, to preform iterated task within another iterated task. Consider the following loops: ch = 'abc'; m = 3; for c = ch for k = 1:m disp([c num2str(k)]) % NUM2STR converts the number stored in k to a charachter, % so it can be concatanet...

If you want have a long text to display in the context, you need to set a custom content. For example, you have this: But you wish your text will be fully shown: All you need to do, is to add a style to your content like below: private void generateNotification(Context context) { ...

Following example shows steps involved in initializing a view from XIB. This is not a complex operation but exact steps need to be followed in order to do it right way first time, avoiding exceptions. How does loadNibNamed Works Main steps are: Create XIB Create class .h and .m Define outlet...