Tutorial by Examples: g

Assuming you have the following directory of files: You can setup a web server to serve these files as follows: Python 2.x2.3 import SimpleHTTPServer import SocketServer PORT = 8000 handler = SimpleHTTPServer.SimpleHTTPRequestHandler httpd = SocketServer.TCPServer(("localhost"...

The orderBy() method specifies the ORDER BY fragment of a SQL query.For example consider our employee table having fields emp_id, emp_first_name, emp_last_name and emp_salary.Suppose we need to order the result by increasing order of employee salaries.We can do it in sql as given below. Select * fr...

Without replacement With combn, each vector appears in a column: combn(LETTERS, 3) # Showing only first 10. [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [1,] "A" "A" "A" "A" "A" "A" "A" "A" &quo...

Below are examples of generating 5 random numbers using various probability distributions. Uniform distribution between 0 and 10 runif(5, min=0, max=10) [1] 2.1724399 8.9209930 6.1969249 9.3303321 2.4054102 Normal distribution with 0 mean and standard deviation of 1 rnorm(5, mean=0, sd=1) [1...

Without replacement choose(length(LETTERS), 5) [1] 65780 With replacement length(letters)^5 [1] 11881376

When the app is based on more than one criteria, instead of creating a lot of flavors you can define flavor dimensions. The flavor dimensions define the cartesian product that will be used to produce variants. Example: flavorDimensions("dimA", "dimB") productFlavors { ...

You can set the behavior of the FAB in XML. For example: <android.support.design.widget.FloatingActionButton app:layout_behavior=".MyBehavior" /> Or you can set programmatically using: CoordinatorLayout.LayoutParams p = (CoordinatorLayout.LayoutParams) fab.getLayoutPara...

Items are added to a Collection by calling its .Add method: Syntax: .Add(item, [key], [before, after]) ParameterDescriptionitemThe item to store in the Collection. This can be essentially any value that a variable can be assigned to, including primitive types, arrays, objects, and Nothing.keyO...

Items are removed from a Collection by calling its .Remove method: Syntax: .Remove(index) ParameterDescriptionindexThe item to remove from the Collection. If the value passed is a numeric type or Variant with a numeric sub-type, it will be interpreted as a numeric index. If the value passed i...

The number of items in a Collection can be obtained by calling its .Count function: Syntax: .Count() Sample Usage: Public Sub Example() Dim foo As New Collection With foo .Add "One" .Add "Two" .Add "Three" .Add...

Items can be retrieved from a Collection by calling the .Item function. Syntax: .Item(index) ParameterDescriptionindexThe item to retrieve from the Collection. If the value passed is a numeric type or Variant with a numeric sub-type, it will be interpreted as a numeric index. If the value pas...

Keys Unlike a Scripting.Dictionary, a Collection does not have a method for determining if a given key exists or a way to retrieve keys that are present in the Collection. The only method to determine if a key is present is to use the error handler: Public Function KeyExistsInCollection(ByVal key...

The easiest way to clear all of the items from a Collection is to simply replace it with a new Collection and let the old one go out of scope: Public Sub Example() Dim foo As New Collection With foo .Add "One" .Add "Two" .Add "Thre...

There are multiple ways to create a multiline string in PowerShell: You can use the special characters for carriage return and/or newline manually or use the NewLine-environment variable to insert the systems "newline" value) "Hello`r`nWorld" "Hello{0}World" -f [...

Here-strings are very useful when creating multiline strings. One of the biggest benefits compared to other multiline strings are that you can use quotes without having to escape them using a backtick. Here-string Here-strings begin with @" and a linebreak and end with "@ on it's own lin...

Using variables in a string You can concatenate strings using variables inside a double-quoted string. This does not work with properties. $string1 = "Power" $string2 = "Shell" "Greetings from $string1$string2" Using the + operator You can also join strings usin...

The -Command parameter is used to specify commands to be executed on launch. It supports multiple data inputs. -Command <string> You can specify commands to executed on launch as a string. Multiple semicolon ;-separated statements may be executed. >PowerShell.exe -Command "(Get-Date...

You can specify a file to a ps1-script to execute it's content on launch using the -File parameter. Basic script MyScript.ps1 (Get-Date).ToShortDateString() "Hello World" Output: >PowerShell.exe -File Desktop\MyScript.ps1 10.09.2016 Hello World Using parameters and argument...

public static async Task PostAsync(this Uri uri, object value) { var content = new ObjectContext(value.GetType(), value, new JsonMediaTypeFormatter()); using (var client = new HttpClient()) { return await client.PostAsync(uri, content); } } . . . var uri = new ...

public static async Task<TResult> GetAnsync<TResult>(this Uri uri) { using (var client = new HttpClient()) { var message = await client.GetAsync(uri); if (!message.IsSuccessStatusCode) throw new Exception(); return message.ReadAsAsyn...