Tutorial by Examples: u

CREATE TABLE new_table_name LIKE existing_table_name;

What you need is to get an entitlements file so the app can access your iCloud and write records using CloudKit. Follow the steps to grant access to iCloud from your app: 1- Select the project in the Project Navigator, and then open the General tab. 2- In the Identity section, set your developer ...

All the records create using CloudKit-related code can be previewed, edited and even removed in CloudKit Dashboard. To access CloudKit Dashboard, go here. There are several parts in the dashboard: Record Types (which will be discussed later) Security Roles (which is where you can set databases ...

To save date to CloudKit, we must make: A CKRecordID (the key of your unique record) A CKRecord (which includes data) Making a record key To ensure that every new record identifier is unique, we use the current timestamp, which is unique. We get the timestamp using NSDate's method timeInter...

c++11 The alignment requirement of a type can be queried using the alignof keyword as a unary operator. The result is a constant expression of type std::size_t, i.e., it can be evaluated at compile time. #include <iostream> int main() { std::cout << "The alignment requiremen...

If you look for the help section of | or bar : :h bar you can see: bar | To screen column [count] in the current line. exclusive motion. Ceci n'est pas une pipe. This is a reference to the painti...

Search for :h UserGettingBored *UserGettingBored* UserGettingBored When the user presses the same key 42 times. Just kidding! :-)

if ([[dataObject objectForKey:@"yourVariable"] isEqualToString:"Hello World"]) { return YES; } else { return NO; } You can query values stored using KVC quickly and easily, without needing to retrieve or cast these as local variables.

Fixtures are initial data for the database. The most straightforward way when you have some existing data already is to use the command dumpdata ./manage.py dumpdata > databasedump.json # full database ./manage.py dumpdata myapp > databasedump.json # only 1 app ....

This method allows a command to be sent to Cmd.exe, and returns the standard output (including standard error) as a string: private static string SendCommand(string command) { var cmdOut = string.Empty; var startInfo = new ProcessStartInfo("cmd", command) { ...

To create a UDF, we need to extend UDF (org.apache.hadoop.hive.ql.exec.UDF) class and implement evaluate method. Once UDF is complied and JAR is build, we need to add jar to hive context to create a temporary/permanent function. import org.apache.hadoop.hive.ql.exec.UDF; class UDFExample ex...

Given a Day, we can perform simple arithmetic and comparisons, such as adding: import Data.Time addDays 1 (fromGregorian 2000 1 1) -- 2000-01-02 addDays 1 (fromGregorian 2000 12 31) -- 2001-01-01 Subtract: addDays (-1) (fromGregorian 2000 1 1) -- 1999-12-31 addDays (-1) (fromGregorian...

[footag foo="value of 1" attribute-2="value of 2"] In wordpress admin we use pre defined shortcodes by writing the shortcode name inside square brackets and optionally adding attributes to it separating by space.

<?php echo do_shortcode("[footag foo='Hi! I am a foo output']"); ?> To print a shortcode using php use the do_shortcode function and echo the returned value.

Like Getting a result from another Activity you need to call the Fragment's method startActivityForResult(Intent intent, int requestCode). note that you should not call getActivity().startActivityForResult() as this will take the result back to the Fragment's parent Activity. Receiving the result c...

Here a simple portable way to get the current device family: /// <summary> /// All the device families /// </summary> public enum DeviceFamily { Desktop, Mobile, Iot, Xbox, } /// <summary> /// The helper to get the current device family /// </summ...

Depending on the device/release version of the system, some API may not be available. You can check which contract is supported by using ApiInformation.IsApiContractPresent() For example, this will return true on phone devices and false on the others ApiInformation.IsApiContractPresent(typeof(Cal...

enum SomeEnum { A, B } let enumValues:Array<string>= []; for(let value in SomeEnum) { if(typeof SomeEnum[value] === 'number') { enumValues.push(value); } } enumValues.forEach(v=> console.log(v)) //A //B

The IsHighResolution property indicates whether the timer is based on a high-resolution performance counter or based on the DateTime class. This field is read-only. // Display the timer frequency and resolution. if (Stopwatch.IsHighResolution) { Console.WriteLine("Operations timed ...

The tabular environment is the most basic way to create a table in LaTeX and doesn't require any other packages. \begin{tabular}{|lcr||} left aligned column & center column & right column \\ \hline text & text & text \\ text & text & text \\ \end{tabular} T...