Generics – 飛奔嘅蝸牛

( ! ) Deprecated: Function WP_Dependencies->add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /var/www/html/wp-includes/functions.php on line 6131
Call Stack
#	Time	Memory	Function	Location
1	0.0000	484048	{main}( )	.../index.php:0
2	0.0007	484400	require( '/var/www/html/wp-blog-header.php )	.../index.php:17
3	0.4096	4085440	require_once( '/var/www/html/wp-includes/template-loader.php )	.../wp-blog-header.php:19
4	0.4138	4114432	include( '/var/www/html/wp-content/themes/twentyfifteen/single.php )	.../template-loader.php:125
5	0.4138	4114432	get_header( $name = ???, $args = ??? )	.../single.php:10
6	0.4138	4114648	locate_template( $template_names = [0 => 'header.php'], $load = TRUE, $load_once = TRUE, $args = [] )	.../general-template.php:48
7	0.4138	4114744	load_template( $_template_file = '/var/www/html/wp-content/themes/twentyfifteen/header.php', $load_once = TRUE, $args = [] )	.../template.php:749
8	0.4141	4115288	require_once( '/var/www/html/wp-content/themes/twentyfifteen/header.php )	.../template.php:814
9	0.4142	4122696	wp_head( )	.../header.php:18
10	0.4142	4122696	do_action( $hook_name = 'wp_head' )	.../general-template.php:3197
11	0.4142	4122912	WP_Hook->do_action( $args = [0 => ''] )	.../plugin.php:522
12	0.4142	4122912	WP_Hook->apply_filters( $value = '', $args = [0 => ''] )	.../class-wp-hook.php:365
13	0.4144	4126328	wp_enqueue_scripts( '' )	.../class-wp-hook.php:341
14	0.4144	4126328	do_action( $hook_name = 'wp_enqueue_scripts' )	.../script-loader.php:2311
15	0.4144	4126544	WP_Hook->do_action( $args = [0 => ''] )	.../plugin.php:522
16	0.4144	4126544	WP_Hook->apply_filters( $value = '', $args = [0 => ''] )	.../class-wp-hook.php:365
17	0.4146	4128432	twentyfifteen_scripts( '' )	.../class-wp-hook.php:341
18	0.4147	4129952	wp_style_add_data( $handle = 'twentyfifteen-ie', $key = 'conditional', $value = 'lt IE 9' )	.../functions.php:440
19	0.4147	4129952	WP_Styles->add_data( $handle = 'twentyfifteen-ie', $key = 'conditional', $value = 'lt IE 9' )	.../functions.wp-styles.php:245
20	0.4147	4129952	WP_Dependencies->add_data( $handle = 'twentyfifteen-ie', $key = 'conditional', $value = 'lt IE 9' )	.../class-wp-styles.php:385
21	0.4147	4129952	_deprecated_argument( $function_name = 'WP_Dependencies->add_data()', $version = '6.9.0', $message = 'IE conditional comments are ignored by all supported browsers.' )	.../class-wp-dependencies.php:317
22	0.4148	4130272	wp_trigger_error( $function_name = '', $message = 'Function WP_Dependencies->add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 )	.../functions.php:5925
23	0.4148	4136656	trigger_error( $message = 'Function WP_Dependencies->add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 )	.../functions.php:6131

( ! ) Deprecated: Function WP_Dependencies->add_data() was called with an argument that is deprecated since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /var/www/html/wp-includes/functions.php on line 6131

Call Stack

Time

Memory

Function

Location

0.0000

484048

{main}( )

.../index.php:0

0.0007

484400

require( '/var/www/html/wp-blog-header.php )

.../index.php:17

0.4096

4085440

require_once( '/var/www/html/wp-includes/template-loader.php )

.../wp-blog-header.php:19

0.4138

4114432

include( '/var/www/html/wp-content/themes/twentyfifteen/single.php )

.../template-loader.php:125

0.4138

4114432

get_header( $name = ???, $args = ??? )

.../single.php:10

0.4138

4114648

locate_template( $template_names = [0 => 'header.php'], $load = TRUE, $load_once = TRUE, $args = [] )

.../general-template.php:48

0.4138

4114744

load_template( $_template_file = '/var/www/html/wp-content/themes/twentyfifteen/header.php', $load_once = TRUE, $args = [] )

.../template.php:749

0.4141

4115288

require_once( '/var/www/html/wp-content/themes/twentyfifteen/header.php )

.../template.php:814

0.4142

4122696

wp_head( )

.../header.php:18

0.4142

4122696

do_action( $hook_name = 'wp_head' )

.../general-template.php:3197

0.4142

4122912

WP_Hook->do_action( $args = [0 => ''] )

.../plugin.php:522

0.4142

4122912

WP_Hook->apply_filters( $value = '', $args = [0 => ''] )

.../class-wp-hook.php:365

0.4144

4126328

wp_enqueue_scripts( '' )

.../class-wp-hook.php:341

0.4144

4126328

do_action( $hook_name = 'wp_enqueue_scripts' )

.../script-loader.php:2311

0.4144

4126544

WP_Hook->do_action( $args = [0 => ''] )

.../plugin.php:522

0.4144

4126544

WP_Hook->apply_filters( $value = '', $args = [0 => ''] )

.../class-wp-hook.php:365

0.4146

4128432

twentyfifteen_scripts( '' )

.../class-wp-hook.php:341

0.4147

4129952

wp_style_add_data( $handle = 'twentyfifteen-ie', $key = 'conditional', $value = 'lt IE 9' )

.../functions.php:440

0.4147

4129952

WP_Styles->add_data( $handle = 'twentyfifteen-ie', $key = 'conditional', $value = 'lt IE 9' )

.../functions.wp-styles.php:245

0.4147

4129952

WP_Dependencies->add_data( $handle = 'twentyfifteen-ie', $key = 'conditional', $value = 'lt IE 9' )

.../class-wp-styles.php:385

0.4147

4129952

_deprecated_argument( $function_name = 'WP_Dependencies->add_data()', $version = '6.9.0', $message = 'IE conditional comments are ignored by all supported browsers.' )

.../class-wp-dependencies.php:317

0.4148

4130272

wp_trigger_error( $function_name = '', $message = 'Function WP_Dependencies->add_data() was called with an argument that is deprecated since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 )

.../functions.php:5925

0.4148

4136656

trigger_error( $message = 'Function WP_Dependencies->add_data() was called with an argument that is deprecated since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 )

.../functions.php:6131

( ! ) Deprecated: Function WP_Dependencies->add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /var/www/html/wp-includes/functions.php on line 6131
Call Stack
#	Time	Memory	Function	Location
1	0.0000	484048	{main}( )	.../index.php:0
2	0.0007	484400	require( '/var/www/html/wp-blog-header.php )	.../index.php:17
3	0.4096	4085440	require_once( '/var/www/html/wp-includes/template-loader.php )	.../wp-blog-header.php:19
4	0.4138	4114432	include( '/var/www/html/wp-content/themes/twentyfifteen/single.php )	.../template-loader.php:125
5	0.4138	4114432	get_header( $name = ???, $args = ??? )	.../single.php:10
6	0.4138	4114648	locate_template( $template_names = [0 => 'header.php'], $load = TRUE, $load_once = TRUE, $args = [] )	.../general-template.php:48
7	0.4138	4114744	load_template( $_template_file = '/var/www/html/wp-content/themes/twentyfifteen/header.php', $load_once = TRUE, $args = [] )	.../template.php:749
8	0.4141	4115288	require_once( '/var/www/html/wp-content/themes/twentyfifteen/header.php )	.../template.php:814
9	0.4142	4122696	wp_head( )	.../header.php:18
10	0.4142	4122696	do_action( $hook_name = 'wp_head' )	.../general-template.php:3197
11	0.4142	4122912	WP_Hook->do_action( $args = [0 => ''] )	.../plugin.php:522
12	0.4142	4122912	WP_Hook->apply_filters( $value = '', $args = [0 => ''] )	.../class-wp-hook.php:365
13	0.4144	4126328	wp_enqueue_scripts( '' )	.../class-wp-hook.php:341
14	0.4144	4126328	do_action( $hook_name = 'wp_enqueue_scripts' )	.../script-loader.php:2311
15	0.4144	4126544	WP_Hook->do_action( $args = [0 => ''] )	.../plugin.php:522
16	0.4144	4126544	WP_Hook->apply_filters( $value = '', $args = [0 => ''] )	.../class-wp-hook.php:365
17	0.4146	4128432	twentyfifteen_scripts( '' )	.../class-wp-hook.php:341
18	0.4415	4137760	wp_style_add_data( $handle = 'twentyfifteen-ie7', $key = 'conditional', $value = 'lt IE 8' )	.../functions.php:444
19	0.4415	4137760	WP_Styles->add_data( $handle = 'twentyfifteen-ie7', $key = 'conditional', $value = 'lt IE 8' )	.../functions.wp-styles.php:245
20	0.4415	4137760	WP_Dependencies->add_data( $handle = 'twentyfifteen-ie7', $key = 'conditional', $value = 'lt IE 8' )	.../class-wp-styles.php:385
21	0.4415	4137760	_deprecated_argument( $function_name = 'WP_Dependencies->add_data()', $version = '6.9.0', $message = 'IE conditional comments are ignored by all supported browsers.' )	.../class-wp-dependencies.php:317
22	0.4415	4138080	wp_trigger_error( $function_name = '', $message = 'Function WP_Dependencies->add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 )	.../functions.php:5925
23	0.4416	4138304	trigger_error( $message = 'Function WP_Dependencies->add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 )	.../functions.php:6131

Call Stack

Time

Memory

Function

Location

0.0000

484048

{main}( )

.../index.php:0

0.0007

484400

require( '/var/www/html/wp-blog-header.php )

.../index.php:17

0.4096

4085440

require_once( '/var/www/html/wp-includes/template-loader.php )

.../wp-blog-header.php:19

0.4138

4114432

include( '/var/www/html/wp-content/themes/twentyfifteen/single.php )

.../template-loader.php:125

0.4138

4114432

get_header( $name = ???, $args = ??? )

.../single.php:10

0.4138

4114648

locate_template( $template_names = [0 => 'header.php'], $load = TRUE, $load_once = TRUE, $args = [] )

.../general-template.php:48

0.4138

4114744

load_template( $_template_file = '/var/www/html/wp-content/themes/twentyfifteen/header.php', $load_once = TRUE, $args = [] )

.../template.php:749

0.4141

4115288

require_once( '/var/www/html/wp-content/themes/twentyfifteen/header.php )

.../template.php:814

0.4142

4122696

wp_head( )

.../header.php:18

0.4142

4122696

do_action( $hook_name = 'wp_head' )

.../general-template.php:3197

0.4142

4122912

WP_Hook->do_action( $args = [0 => ''] )

.../plugin.php:522

0.4142

4122912

WP_Hook->apply_filters( $value = '', $args = [0 => ''] )

.../class-wp-hook.php:365

0.4144

4126328

wp_enqueue_scripts( '' )

.../class-wp-hook.php:341

0.4144

4126328

do_action( $hook_name = 'wp_enqueue_scripts' )

.../script-loader.php:2311

0.4144

4126544

WP_Hook->do_action( $args = [0 => ''] )

.../plugin.php:522

0.4144

4126544

WP_Hook->apply_filters( $value = '', $args = [0 => ''] )

.../class-wp-hook.php:365

0.4146

4128432

twentyfifteen_scripts( '' )

.../class-wp-hook.php:341

0.4415

4137760

wp_style_add_data( $handle = 'twentyfifteen-ie7', $key = 'conditional', $value = 'lt IE 8' )

.../functions.php:444

0.4415

4137760

WP_Styles->add_data( $handle = 'twentyfifteen-ie7', $key = 'conditional', $value = 'lt IE 8' )

.../functions.wp-styles.php:245

0.4415

4137760

WP_Dependencies->add_data( $handle = 'twentyfifteen-ie7', $key = 'conditional', $value = 'lt IE 8' )

.../class-wp-styles.php:385

0.4415

4137760

_deprecated_argument( $function_name = 'WP_Dependencies->add_data()', $version = '6.9.0', $message = 'IE conditional comments are ignored by all supported browsers.' )

.../class-wp-dependencies.php:317

0.4415

4138080

.../functions.php:5925

0.4416

4138304

.../functions.php:6131

Generics

Generics are a built-in language feature that will make your software more reliable. This lesson discusses the following topics:

Introduction

This section explains some common shortcomings associated with non-generic code. Specifically, it shows how certain kinds of bugs will crash an application at runtime, since they are not detectable by the compiler.

Generic Types

This section explains generic type declarations, type variables, type parameters, and type arguments. It also describes the naming conventions that are specific to generics.

Generic Methods and Constructors

This section shows how type parameters can be used to define generic methods and constructors.

Bounded Type Parameters

This section describes how type parameters can specify an upper bound that limits the kind of types that can be passed in.

Subtyping

This section describes how generic subtyping differs from non-generic subtyping.

Wildcards

This section continues the discussion of subtyping by describing bounded and unbounded wildcards.

Type Erasure

This section describes type erasure, raw types, and unchecked warnings.

Introduction

Generic Types

Generic Methods and Constructors

Bounded Type Parameters

Subtyping

Wildcards

Type Erasure

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