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Installing Electrify for a Meteor application

Electron ports HTML web applications to native applications for a range of devices, including creating native desktop applications. It's also very easy to get started! To begin, we must have electron, nodejs, npm, git and meteor installed. Familiarity with these tools is vital for working with Mete...

Using Electrify on a Meteor Application

Let's download a Meteor Todos example project, using a Linux shell (command line) script, to test out Electrifying a project for the first time: Requirements for this section: Git apt-get install git-all There are many ways to install Git. Check them out here. git is a version control sys...

Installation or Setup

Installing Angular Material npm npm install angular-material --save bower bower install angular-material --save jspm jspm install angular-material From Cloud cdnjs | jsdelivr | googlecdn Getting Started (blank shell) <html lang="en"> <head> <meta name...

ElementAt and ElementAtOrDefault

ElementAt will return the item at index n. If n is not within the range of the enumerable, throws an ArgumentOutOfRangeException. int[] numbers = { 1, 2, 3, 4, 5 }; numbers.ElementAt(2); // 3 numbers.ElementAt(10); // throws ArgumentOutOfRangeException ElementAtOrDefault will return the item...

Using IntStream to iterate over indexes

Streams of elements usually do not allow access to the index value of the current item. To iterate over an array or ArrayList while having access to indexes, use IntStream.range(start, endExclusive). String[] names = { "Jon", "Darin", "Bauke", "Hans", "M...

Create and use a GnuPG key quickly

Install haveged (example sudo apt-get install haveged) to speed up the random byte process. Then: gpg --gen-key gpg --list-keys outputs: pub 2048R/NNNNNNNN 2016-01-01 uid Name <[email protected]> sub 2048R/xxxxxxxx 2016-01-01 Then publish: gpg --keyserver pgp.mi...

Simple data bounded selection

var myData = [ { name: "test1", value: "ok" }, { name: "test2", value: "nok" } ] // We have to select elements (here div.samples) // and assign data. The second parameter of data() is really important, // it will determine the "key" t...

Concatenation Operations

Concatenation refers to the operation of appending one sequence to another. Concat Concatenates two sequences to form one sequence. Method Syntax // Concat var numbers1 = new int[] { 1, 2, 3 }; var numbers2 = new int[] { 4, 5, 6 }; var numbers = numbers1.Concat(numbers2); // number...

Filtering Operations

Filtering refers to the operations of restricting the result set to contain only those elements that satisfy a specified condition. Where Selects values that are based on a predicate function. Method Syntax // Where var numbers = new int[] { 1, 2, 3, 4, 5, 6, 7, 8 }; var evens = number...

Join Operations

A join of two data sources is the association of objects in one data source with objects that share a common attribute in another data source. Join Joins two sequences based on key selector functions and extracts pairs of values. Method Syntax // Join class Customer { public int Id ...

Projection Operations

Projection refers to the operations of transforming an object into a new form. Select Projects values that are based on a transform function. Method Syntax // Select var numbers = new int[] { 1, 2, 3, 4, 5 }; var strings = numbers.Select(n => n.ToString()); // strings = { "1...

Sorting Operations

A sorting operation orders the elements of a sequence based on one or more attributes. OrderBy Sorts values in ascending order. Method Syntax // OrderBy var numbers = new int[] { 5, 4, 8, 2, 7, 1, 9, 3, 6 }; var ordered = numbers.OrderBy(n => n); // ordered = { 1, 2, 3, 4, 5, 6, ...

Conversion Operations

Conversion operations change the type of input objects. AsEnumerable Returns the input typed as IEnumerable. Method Syntax // AsEnumerable int[] numbers = { 1, 2, 3, 4, 5 }; var nums = numbers.AsEnumerable(); // nums: static type is IEnumerable<int> Query Syntax // Not app...

Aggregation Operations

Aggregation operations computes a single value from a collection of values. Aggregate Performs a custom aggregation operation on the values of a collection. Method Syntax // Aggregate var numbers = new int[] { 1, 2, 3, 4, 5 }; var product = numbers.Aggregate(1, (acc, n) => acc * n);...

Quantifier Operations

Quantifier operations return a Boolean value that indicates whether some or all of the elements in a sequence satisfy a condition. All Determines whether all the elements in a sequence satisfy a condition. Method Syntax // All var numbers = new int[] { 1, 2, 3, 4, 5 }; bool areLessThan...

Grouping Operations

Grouping refers to the operations of putting data into groups so that the elements in each group share a common attribute. GroupBy Groups elements that share a common attribute. Method Syntax // GroupBy class Order { public string Customer { get; set; } public string Descriptio...

Partition Operations

Partitioning refers to the operations of dividing an input sequence into two sections, without rearranging the elements, and then returning one of the sections. Skip Skips elements up to a specified position in a sequence. Method Syntax // Skip var numbers = new int[] { 1, 2, 3, 4, 5 }; ...

Generation Operations

Generation refers to creating a new sequence of values. DefaultIfEmpty Replaces an empty collection with a default valued singleton collection. Method Syntax // DefaultIfEmpty var nums = new int[0]; var numbers = nums.DefaultIfEmpty(); // numbers = { 0 } Query Syntax // Not appl...

Set Operations

Set operations refer to query operations that produce a result set that is based on the presence or absence of equivalent elements within the same or separate collections (or sets). Distinct Removes duplicate values from a collection. Method Syntax // Distinct var numbers = new int[] { 1,...

Equality Operations

Two sequences whose corresponding elements are equal and which have the same number of elements are considered equal. SequenceEqual Determines whether two sequences are equal by comparing elements in a pair-wise manner. Method Syntax // SequenceEqual var numbers1 = new int[] { 1, 2, 3, 4,...

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