There&#39;s no difference in the resulting value, just:

- `(float)` is a language feature and very quick
- `floatval()` incurs the overhead of a function call (minimal, but nonetheless...)
- `floatval()` as a function can be used in ways that `(float)` cannot, e.g. `array_map(&#39;floatval&#39;, $foo)`

The last point is, I believe, the main reason for `floatval`&#39;s existence: so each casting operation has a function equivalent, which can be useful in some circumstances.

I&#39;d like to remove all characters before a designated character or set of characters (for example):

    intro = &quot;&lt;&gt;I&#39;m Tom.&quot;

Now I&#39;d like to remove the `&lt;&gt;` before `I&#39;m` (or more specifically, `I`). Any suggestions?

How to remove all characters before a specific character in Python?

I am trying to get a unit test written in Typescript using Jasmine to compile. With the following in my unit-test file, Resharper prompts me with a link to import types from jasmine.d.ts. 

    /// &lt;reference path=&quot;sut.ts&quot; /&gt;
    /// &lt;reference path=&quot;../../../scripts/typings/jasmine/jasmine.d.ts&quot; /&gt;
    
    describe(&quot;Person FullName&quot;, function () {
        var person;
    
        BeforeEach(function () {
            person = new Person();
            person.setFirstName(&quot;Joe&quot;);
            person.setLastName(&quot;Smith&quot;);
        });
    
        It(&quot;should concatenate first and last names&quot;, function () {
            Expect(person.getFullName()).toBe(&quot;Joe, Smith&quot;);
        });
    });

So I click on the link and end up with the following (actually resharper only prefixed the describe function with &quot;Jasmine.&quot;, so I manually prefixed the other Jasmine calls):

    /// &lt;reference path=&quot;sut.ts&quot; /&gt;
    /// &lt;reference path=&quot;../../../scripts/typings/jasmine/jasmine.d.ts&quot; /&gt;
    import Jasmine = require(&quot;../../../Scripts/typings/jasmine/jasmine&quot;);
    
    Jasmine.describe(&quot;Person FullName&quot;, function () {
        var person;
    
        Jasmine.BeforeEach(function () {
            person = new Person();
            person.setFirstName(&quot;Joe&quot;);
            person.setLastName(&quot;Smith&quot;);
        });
    
        Jasmine.It(&quot;should concatenate first and last names&quot;, function () {
            Jasmine.Expect(person.getFullName()).toBe(&quot;Joe, Smith&quot;);
        });
    });

However the import statement has a red squiggly line with error message &quot;Unable to resolve external module ../../../scripts/typings/jasmine/jasmine. Module cannot be aliased to a non-module type&quot;

Any idea what is causing this error? I&#39;ve checked that the &quot;Module System&quot; option is set to AMD in my project build settings. I&#39;ve also checked that the jasmine module is defined in jasmine.d.ts. I downloaded this file from DefinitelyTyped site.

    declare module jasmine {
        ...
    }

Unit testing using Jasmine and TypeScript

Is there any difference between typecasting and using a function to convert a variable to some type?

`(float)$var` VS. `floatval($var)`

If there are, when one of those should be used instead of the other?

Typecasting vs function to convert variable type in PHP

Is there any difference between typecasting and using a function to convert a variable to some type?
<code>(float)$var</code> VS. <code>floatval($var)</code>
If there are, when one of those should be used instead of the other?

I want to do basic access authentication using Guzzle and I am very new to programming. I have no clue what to do. I tried to do this using curl but my environment requires using guzzle.

How do I do HTTP basic authentication using Guzzle?

I do not understand the purpose of the form tag in html. 

I can easily just use any input types perfectly without using the form tag. It almost seems redundant to wrap it around inputs. 

Additionally, if I am using ajax to call a server-side page, I can simply use jQuery for that. The only exception is that I noticed that you have to wrap an upload script around a form tag for some reason. 

So why are forms still so widely used for simple things like text inputs? It seems like a very archaic and unnecessary thing to do. 

I just don&#39;t see the benefit or need for it. Maybe I&#39;m missing something.

What is the purpose of the html form tag

How do I redirect back to my form page, with the given `POST` params, if my form action throws an exception?

How to redirect back to form with input - Laravel 5

I want to know if there is a solution on how to unit-test a PHP trait.

I know we can test a class which is using the trait, but I was wondering if there are better approaches.

Thanks for any advice in advance :) 

**EDIT**

One alternative is to use the Trait in the test class itself as I&#39;m going to demonstrate bellow.

**But** I&#39;m not that keen on this approach since there is no guaranty there are no similar method names between the trait, the class and also the `PHPUnit_Framework_TestCase` (in this example):

Here is an example trait:

    trait IndexableTrait
    {
        /** @var int */
        private $index;

        /**
         * @param $index
         * @return $this
         * @throw \InvalidArgumentException
         */
        public function setIndex($index)
        {
            if (false === filter_var($index, FILTER_VALIDATE_INT)) {
                throw new \InvalidArgumentException(&#39;$index must be integer.&#39;);
            }

            $this-&gt;index = $index;

            return $this;
        }

        /**
         * @return int|null
         */
        public function getIndex()
        {
            return $this-&gt;index;
        }
    }

and its test:

    class TheAboveTraitTest extends \PHPUnit_Framework_TestCase
    {
        use TheAboveTrait;

        public function test_indexSetterAndGetter()
        {
            $this-&gt;setIndex(123);
            $this-&gt;assertEquals(123, $this-&gt;getIndex());
        }

        public function test_indexIntValidation()
        {
            $this-&gt;setExpectedException(\Exception::class, &#39;$index must be integer.&#39;);
            $this-&gt;setIndex(&#39;bad index&#39;);
        }
    }

How to unit test PHP traits

When running `composer diagnose`, I get the following error : 

&gt; The xdebug extension is loaded, this can slow down Composer a little.
&gt; Disabling it when using Composer is recommended.

How can I disable xdebug only when I&#39;m running Composer?

Disabling xdebug when running composer

I have a method with the following overloads:

    string Call(string function, Dictionary&lt;string, object&gt; parameters, object body)
    string Call(string function, Dictionary&lt;string, object&gt; parameters, JObject body)

Now I added another overload:

    string Call(string function)
    {
        return Call(function, null, (JObject) null);
    }

I added a cast to `JObject` so the compiler knows which overload it should use. But Visual Studio tells me that the cast is redundant. But why isn&#39;t my call ambiguous without the cast?

Why is this cast redundant?

Which is the the best way (if there is one) to cast from number to string in Typescript?

    var page_number:number = 3;
    window.location.hash = page_number; 

In this case the compiler throws the error:

&gt; Type &#39;number&#39; is not assignable to type &#39;string&#39;

Because `location.hash` is a string.
    
    window.location.hash = &quot;&quot;+page_number; //casting using &quot;&quot; literal
    window.location.hash = String(number); //casting creating using the String() function

So which method is better?


Casting a number to a string in TypeScript

Today I reached page **167** of [The C Programming Language (second edition Brian W. Kernighan &amp; Dennis  M. Ritchie)](http://www.amazon.com/The-Programming-Language-Brian-Kernighan/dp/0131103628) and found that the author says I must cast `malloc`. Here is the part from the book:

&gt;**7.8.5 Storage Management**

&gt;The functions malloc and calloc obtain blocks of memory dynamically.
&gt; 
&gt;     void *malloc(size_t n)
&gt;
&gt;    returns a pointer to n bytes of uninitialized storage, or NULL if the request cannot be satisfied.
&gt;
&gt;     void *calloc(size_t n, size_t size)
&gt;
&gt;returns a pointer to enough free space for an array of n objects of the specified size, or NULL if
    the request cannot be satisfied. The storage is initialized to zero.
    The pointer returned by malloc or calloc has the proper alignment for the object in question,
    but it must be cast into the appropriate type, as in
&gt;
&gt;     int *ip;
&gt;     ip = (int *) calloc(n, sizeof(int));

I already know that `malloc` (and its family) returns type **void***, and [there are good explanations why not to cast `malloc`][1].

But my question is: Why does the book say I should cast it?

  [1]: https://stackoverflow.com/questions/605845/do-i-cast-the-result-of-malloc

Why does &quot;The C Programming Language&quot; book say I must cast malloc?

What is the difference between
 

    float f = (float) 99.32 ;

and 

    float f = 99.32f ;


Both of them compiled and ran successfully.

What is the difference between casting to `float` and adding `f` as a suffix when initializing a `float`?

Trying to pass &quot;self&quot; to a C function in swift, when calling following code:

&lt;!-- language: lang-swift --&gt;

    var callbackStruct : AURenderCallbackStruct = 
        AURenderCallbackStruct.init(
          inputProc: recordingCallback,
          inputProcRefCon: UnsafeMutablePointer&lt;Void&gt;
        )

What is the ideal way to cast &quot;self&quot; to a UnsafeMutablePointer&lt;Void&gt; type here?


Content Type	Original Author	Original Content on Stackoverflow
Question	Matías Cánepa	View Question on Stackoverflow
Solution 1 - Php	deceze	View Answer on Stackoverflow

Typecasting vs function to convert variable type in PHP

Php Problem Overview

Php Solutions

Solution 1 - Php

Unit testing using Jasmine and TypeScript

How to remove all characters before a specific character in Python?

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