Tutorial by Examples: io

//Add a TextLength Validation to column G var val5 = worksheet.DataValidations.AddTextLengthValidation("G:G"); //For TextLenght Validation, you have to set error message to true val5.ShowErrorMessage = true; //Minimum allowed text lenght val5.Formula.Value = 3; //Maximum allowed te...

For Getting updated or to do something before app goes live to user you can use below method. AppDidFinishLaunching - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Write your code before app launch return YES; } While ...

In order to access or alter an index on a table, you need to somehow place the table into the stack. Let's assume, for this examples that your table is a global variable named tbl. Getting the content at a particular index: int getkey_index(lua_State *L) { lua_getglobal(L, "tbl"); ...

Let's say there is a file we would like to execute, a bash script named add.sh, for example. Typing ./add.sh however, yields a permission error. Getting the permissions is a simple process. To determine the permissions a file has, type: ls -l filename, or, in our case, ls -l ./add.sh This prints ...

Let A and B be two matrices of same dimension. The operators +,-,/,*,^ when used with matrices of same dimension perform the required operations on the corresponding elements of the matrices and return a new matrix of the same dimension. These operations are usually referred to as element-wise opera...

Sometimes one would like to pass names of columns from a data frame to a function. They may be provided as strings and used in a function using [[. Let's take a look at the following example, which prints to R console basic stats of selected variables: basic.stats <- function(dset, vars){ f...

from nltk.tokenize import sent_tokenize, word_tokenize example_text = input("Enter the text: ") print("Sentence Tokens:") print(sent_tokenize(example_text)) print("Word Tokens:") print(word_tokenize(example_text))

An example of a parametric parameter of a type function: data List a = Nil | Cons a (List a) type family DoNotInspect x type instance DoNotInspect x = List x Here x is parametric because to determine the outcome of applying DoNotInspect to a type argument, the type function do not need to in...

The example I'm going to discuss assumes you have a Docker installation that works in your system and a basic understanding of how to work with Node.js . If you are aware of how you must work with Docker , it should be evident that Node.js framework need not be installed on your system, rather we wo...

StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder() .detectDiskWrites() .penaltyLog() //Logs a message to LogCat .build())

Detailed instructions on getting apache-spark-sql set up or installed.

To configure robolectric add @Config annotation to test class or method. Run with custom Application class @RunWith(RobolectricTestRunner.class) @Config(application = MyApplication.class) public final class MyTest { } Set target SDK @RunWith(RobolectricTestRunner.class) @Config(sdk = Build...

SWIFT: Step 1: In your Info.plist add the following attribute: View controller-based status bar appearance and set its value to NO as described in the image below: Step 2: In your AppDelegate.swift file, in didFinishLaunchingWithOptions method, add this code: UIApplication.shared.st...

In previous versions, setting up provisioning profiles was done manually. You generate distribution profile, download it and then distribute your app. This had to be done for every development machine which was extremely time consuming. However, in most situations nowadays, Xcode 8 will do most of t...

Once the IPA file is generated, open Xcode, navigate to developer tools and open Application Loader. If you have multiple accounts in your Xcode, you will be asked to choose. Naturally pick the one you used for code signing in the first step. Pick "Deliver your app" and upload the code....

One to Many Lets say that each Post may have one or many comments and each comment belongs to just a single Post. so the comments table will be having post_id. In this case the relationships will be as follows. Post Model public function comments() { return $this->belongsTo(Post::class...

if and else: it used to check whether the given expression returns true or false and acts as such: if (condition) statement the condition can be any valid C++ expression that returns something that be checked against truth/falsehood for example: if (true) { /* code here */ } // evaluate that ...

SELECT E.LAST_NAME|| ' reports to ' || PRIOR E.LAST_NAME "Walk Top Down" FROM HR.EMPLOYEES E START WITH E.MANAGER_ID IS NULL CONNECT BY PRIOR E.EMPLOYEE_ID = E.MANAGER_ID;

Concept AsyncTask is a class that allows running operations in the background, with the results being published on the UI thread. The main purpose is to eliminate all the boilerplate code for starting/running a thread by eliminating the handlers and all the stuff that are needed for manipulating t...

Detailed instructions on getting quartz.net set up or installed.