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The shorthand property for column rule is column-rule property. You can try to run the following code to implement the column-rule propertyExampleLive Demo .demo { column-count: 4; column-gap: 50px; column-rule: 2px dotted orange; } This is demo text. This is demo text. This is demo text. This ... Read More
The cal_to_jd() function converts a date to Julian day count. It returns a Julian day number.Syntaxcal_to_jd(calendar, month, day, year)Parameterscalendar − The calendar to convert from. Possible values −CAL_GREGORIANCAL_JULIANCAL_JEWISHCAL_FRENCHmonth − Set the month as a number.day − Set the day as a number.year − Set the year as a number.ReturnThe cal_to_jd() function returns a Julian day number.ExampleThe following is an example − Live DemoOutput2458407
The JDMonthName() method returns a month name.Syntaxjdmonthname(julian_day, mode)Parametersjulian_day − A julian day numbermode − Specifies which calendar to convert the Julian Day Count to, and what type of month names is to be returned−0 - Gregorian abbreviated form (Jan, Feb, Mar, etc.)1 - Gregorian (January, February, March, etc.)2 - Julian - abbreviated form (Jan, Feb, Mar, etc.)3 - Julian (January, February, March, etc.)4 - Jewish (Tishri, Heshvan, Kislev, etc.)5 - French Republican (Vendemiaire, Brumaire, Frimaire, etc.)ReturnThe JDMonthName() function returns the month name for the specified Julian Day and calendar.ExampleThe following is an example − Live DemoOutputAug Read More
The call_user_method_array() function call a user method given with an array of parameters.Note − The function is deprecated now.Syntaxcall_user_method_array(method, obj, params)Parametersmethod − Method nameobj − Object that method is being called on.params − Array of parametersAlternativeSince the call_user_method_array() deprecated in PHP 4.1.0, and removed in PHP 7.0, therefore use the following as an alternative solution −call_user_func_array(array($obj, $method), $params);
The uksort() function sorts an array by keys using a user-defined function. It returns TRUE on success and FALSE on failure.Syntaxuksort(arr, custom_function)Parametersarr − The specified array.custom_function − The comparison function. It must return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.ReturnThe uksort() function returns TRUE on success and FALSE on failure.ExampleThe following is an example − Live DemoOutputKey=a Value=99 Key=b Value=27 Key=c Value=56
The getitem(key) takes value for one parameter and returns the value associated with the key. The given key is present in the list associated with the object.if(localStorage.getItem("user")===null) { //... }But if the key is not present in the list then it passes null value by using the below-given codeYou can also follow the below-given procedure −if("user" in localStorage){ alert('yes'); } else { alert('no'); }
Process Creation and Process termination are used to create and terminate processes respectively. Details about these are given as follows −Process CreationA process may be created in the system for different operations. Some of the events that lead to process creation are as follows −User request for process creationSystem InitializationBatch job initializationExecution of a process creation system call by a running processA process may be created by another process using fork(). The creating process is called the parent process and the created process is the child process. A child process can have only one parent but a parent process may ... Read More
Client/Server communication involves two components, namely a client and a server. They are usually multiple clients in communication with a single server. The clients send requests to the server and the server responds to the client requests.There are three main methods to client/server communication. These are given as follows −SocketsSockets facilitate communication between two processes on the same machine or different machines. They are used in a client/server framework and consist of the IP address and port number. Many application protocols use sockets for data connection and data transfer between a client and a server.Socket communication is quite low-level as ... Read More
Process synchronization in Linux involves providing a time slice for each process so that they get the required time for execution.The process can be created using the fork() command in Linux. The creating process is called the parent process and the created process is the child process. A child process can have only one parent but a parent process may have many children. Both the parent and child processes have the same memory image, open files and environment strings. However, they have distinct address spaces.A diagram that demonstrates the fork() command is given as follows −Orphan ProcessesThere are some processes ... Read More
The producer consumer problem is a synchronization problem. There is a fixed size buffer and the producer produces items and enters them into the buffer. The consumer removes the items from the buffer and consumes them.A producer should not produce items into the buffer when the consumer is consuming an item from the buffer and vice versa. So the buffer should only be accessed by the producer or consumer at a time.The producer consumer problem can be resolved using semaphores. The codes for the producer and consumer process are given as follows −Producer ProcessThe code that defines the producer process ... Read More