Tutorial by Examples: l

declare is used to set an execution directive for a block of code. The following directives are recognized: ticks encoding strict_types For instance, set ticks to 1: declare(ticks=1); To enable strict type mode, the declare statement is used with the strict_types declaration: declare(s...

The if statement in the example above allows to execute a code fragment, when the condition is met. When you want to execute a code fragment, when the condition is not met you extend the if with an else. if ($a > $b) { echo "a is greater than b"; } else { echo "a is NOT gre...

require require is similar to include, except that it will produce a fatal E_COMPILE_ERROR level error on failure. When the require fails, it will halt the script. When the include fails, it will not halt the script and only emit E_WARNING. require 'file.php'; PHP Manual - Control Structures - ...

elseif elseif combines if and else. The if statement is extended to execute a different statement in case the original if expression is not met. But, the alternative expression is only executed, when the elseif conditional expression is met. The following code displays either "a is bigger tha...

Assuming we want to modify bit n of an integer primitive, i (byte, short, char, int, or long): (i & 1 << n) != 0 // checks bit 'n' i |= 1 << n; // sets bit 'n' to 1 i &= ~(1 << n); // sets bit 'n' to 0 i ^= 1 << n; // toggles the value of bit 'n' Us...

You must be very careful when providing a forwarding reference overload as it may match too well: struct A { A() = default; // #1 A(A const& ) = default; // #2 template <class T> A(T&& ); // #3 }; The intent here was that A is c...

In Index page change the following: error_reporting(E_ALL | E_STRICT); to error_reporting(E_ALL); Set $_SERVER['MAGE_IS_DEVELOPER_MODE'] = true and uncomment this line (remove the #) #ini_set('display_errors', 1); You can also Set Dev Mode using SetEnv in your .htaccess file To make th...

Creating and returning an image object by loading the image data from the file at the specified path. Example: UIImage *image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:[cellCountry objectForKey:@"Country_Flag"] ofType:nil]]; Using Array: Example NSM...

Template <div id="example"> a={{ a }}, b={{ b }} </div> JavaScript var vm = new Vue({ el: '#example', data: { a: 1 }, computed: { // a computed getter b: function () { // `this` points to the vm instance return this.a + 1 }...

# Extract strings with a specific regex df= df['col_name'].str.extract[r'[Aa-Zz]'] # Replace strings within a regex df['col_name'].str.replace('Replace this', 'With this') For information on how to match strings using regex, see Getting started with Regular Expressions.

The minimum required to use Webpack is the following command: webpack ./src/index.js ./dist/bundle.js // this is equivalent to: webpack source-file destination-file Web pack will take the source file, compile to the output destination and resolve any dependencies in the source files.

SP.SOD.executeOrDelayUntilScriptLoaded( function(){ deleteItem(1); }, "sp.js"); function deleteItem(id){ var clientContext = new SP.ClientContext(); var list = clientContext.get_web().get_lists().getByTitle("List Title"); var item = list.getItemById(id); it...

SP.SOD.executeOrDelayUntilScriptLoaded(showDialog,"sp.js"); function showDialog(){ var options = SP.UI.$create_DialogOptions(); options.url = "/mySite/lists/myList/NewForm.aspx"; options.dialogReturnValueCallback = myCallBackFunction; SP.UI.ModalDialog.show...

Creating List Items SP.SOD.executeOrDelayUntilScriptLoaded(createItem,"sp.js"); function createItem(){ var clientContext = new SP.ClientContext(); var list = clientContext.get_web().get_lists().getByTitle("List Title"); var newItem = list.addItem(); newIte...

SP.SOD.executeOrDelayUntilScriptLoaded(showDialog,"sp.js"); function showDialog(){ SP.UI.ModalDialog.showModalDialog( { url: "/org/it/web/wik/Lists/ExampleCode/DispForm.aspx?ID=6" } ); }

SP.SOD.executeOrDelayUntilScriptLoaded(myFunction,"sp.js"); function myFunction(){ var clientContext = new SP.ClientContext(); var list = clientContext.get_web().get_lists().getByTitle("List Title"); var item = list.getItemById(1); // get item with ID == 1 ...

Basic Example Use the set_viewXml method of the SP.CamlQuery object to specify a CAML query to retrieve items. SP.SOD.executeOrDelayUntilScriptLoaded(showListItems,"core.js"); function showListItems(){ var clientContext = new SP.ClientContext(); var list = clientContext.get_...

SP.SOD.executeOrDelayUntilScriptLoaded(showDialog,"sp.js"); function showDialog(){ var dialogOptions = SP.UI.$create_DialogOptions(); dialogOptions.title = "Your Title Here!"; var dummyElement = document.createElement("div"); dummyElement.style.te...

The plotly package allows many kind of interactive plots, including maps. There are a few ways to create a map in plotly. Either supply the map data yourself (via plot_ly() or ggplotly()), use plotly's "native" mapping capabilities (via plot_geo() or plot_mapbox()), or even a combination o...

A do-while loop is very similar to a while loop, except that the condition is checked at the end of each cycle, not at the start. The loop is therefore guaranteed to execute at least once. The following code will print 0, as the condition will evaluate to false at the end of the first iteration: i...