Tutorial by Examples: g

def noParam = { "I have $it" } def noParamCurry = noParam.curry(2) assert noParamCurry() == 'I have 2'

def honestlyNoParam = { -> "I Don't have it" } // The following all throw IllegalArgumentException honestlyNoParam.curry('whatever') honestlyNoParam.rcurry('whatever') honestlyNoParam.ncurry(0, 'whatever')

This example shows how to establish a connection to an SSL-enabled POP3 email server and send a simple (text only) email. // Configure mail provider Properties props = new Properties(); props.put("mail.smtp.host", "smtp.mymailprovider.com"); props.put("ma...

Because generating documentation is based on markdown, you have to do 2 things : 1/ Write your doctest and make your doctest examples clear to improve readability (It is better to give a headline, like "examples" or "tests"). When you write your tests, do not forget to give 4 s...

Once you've installed the .NET CLI tools, you can create a new project with the following command: dotnet new --lang f# This creates a command line program.

How to get the average amount of debit and credit transactions? > db.transactions.aggregate( [ { $group : { _id : '$cr_dr', // group by type of transaction (debit or credit) count : {$sum : 1}, // number of transaction for each type...

Specifies a numeric minimum and maximum range for a property using System.ComponentModel.DataAnnotations; public partial class Enrollment { public int EnrollmentID { get; set; } [Range(0, 4)] public Nullable<decimal> Grade { get; set; } } If we try to insert/upd...

Specifies how the database generates values for the property. There are three possible values: None specifies that the values are not generated by the database. Identity specifies that the column is an identity column, which is typically used for integer primary keys. Computed specifies that th...

To find active ScriptableObjects during runtime, you can use Resources.FindObjectsOfTypeAll(). T[] instances = Resources.FindObjectsOfTypeAll<T>(); Where T is the type of the ScriptableObject instance you're searching. Active means it has been loaded in memory in some form before. This me...

A shallow copy is a copy of a collection without performing a copy of its elements. >>> import copy >>> c = [[1,2]] >>> d = copy.copy(c) >>> c is d False >>> c[0] is d[0] True

If you have nested lists, it is desireable to clone the nested lists as well. This action is called deep copy. >>> import copy >>> c = [[1,2]] >>> d = copy.deepcopy(c) >>> c is d False >>> c[0] is d[0] False

You can create shallow copies of lists using slices. >>> l1 = [1,2,3] >>> l2 = l1[:] # Perform the shallow copy. >>> l2 [1,2,3] >>> l1 is l2 False

Error handling is important but can make an elegant algorithm into a mess. Railway Oriented Programming (ROP) is used to make error handling elegant and composable. Consider the simple function f: let tryParse s = let b, v = System.Int32.TryParse s if b then Some v else None let f (g : ...

I create a file called database-servlet.xml somewhere on the classpath. Initially your config file will look like this: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/...

One of the easiest examples of using shared services is when we want to store some data from a given page of our application, and then get that data again but from another page. One option could be to send that data as a parameter (for instance, if one page calls the other one) but if we want to us...

UITextView has extra paddings by default. Sometimes it's annoying especially if you want to measure some text without view instance and place them at some area precisely. Do this to remove such paddings. messageTextView.textContainerInset = UIEdgeInsetsZero messageTextView.textContainer.lineFragm...

Before starting you must have: Anaconda installed on your system Account on Binstar If you are not using Anaconda 1.6+ install the binstar command line client: $ conda install binstar $ conda update binstar If you are not using Anaconda the Binstar is also available on pypi: $ pip install bin...

response = requests.get("https://api.github.com/events") text_resp = response.text JSON response: for json-formatted responses the package provides a built-in decoder response = requests.get('https://api.github.com/events') json_resp = response.json() This method will raise a Valu...

The attribute status_code contains the status code of the response good_req = requests.get('https://api.github.com/events') code_200 = good_req.status_code notfound_req = requests.get('https://api.github.com/not_found') code_404 = notfound_req.status_code requests.codes.__dict__ will provid...

In Visual Studio go to your Solution Explorer then click on Project you will be adding model Right mouse. Choose ADO.NET Entity Data Model Then choose Generate from database and click Next in next window click New Connection... and point to the database you want to generate model from (Could be M...