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The left operand value is moved left by the number of bits specified by the right operand.Example: A
You can use PHP array in JavaScript. It works for a single as well as the multidimensional array. Use the json_encode() method to achieve this.The following is the Multi-dimensional PHP array.$myArr= array( array('Amit', 'amit@example.com'), array('Rahul, 'rahul@example.com'), );Converting PHP multidimensional array into JavaScript. var arr = ; Now, let’s finally learn how to access it to output the email.document.write(arr[1][1]);
The left operand value is moved right by the number of bits specified by the right operand.Example: A >> 2 = 15 means 1111.
A smart pointer is a class that wraps a 'raw' (or 'bare') C++ pointer. It is used to manage resources the pointer points to. For example, if the reference to that memory location is lost. It kind of acts like a garbage collector. There are multiple smart pointer types.You should almost always use a smart pointer. This is because the main pain point of using pointers is manual memory management and memory leaks. The smart pointer tries to get rid of both of these. If you don't want to do either of these in practice, you should use a smart ... Read More
As we know that the range of TIME field in MySQL is ‘-838:59:59’ to ‘838:59:59’. Now, if TIMEDIFF() function’s output surpasses this range then MySQL will return either ‘-838:59:59’ or ‘838:59:59’ depends upon the values of the argument. Example mysql> Select TIMEDIFF('2017-09-01 03:05:45', '2017-10-22 03:05:45')AS 'Out of Range TIME Difference'; +------------------------------+ | Out of Range TIME Difference | +------------------------------+ | -838:59:59 | +------------------------------+ 1 row in set, 1 warning (0.00 sec) mysql> Select TIMEDIFF('2017-10-22 04:05:45', '2017-09-01 03:05:45')AS 'Out of Range ... Read More
If L1 and L2 are list objects containing keys and respective values, following list comprehension syntax can be used to construct dictionary object. >>> L1 = ['a','b','c','d'] >>> L2 = [1,2,3,4] >>> d = {L1[k]:L2[k] for k in range(len(L1))} >>> d {'a': 1, 'b': 2, 'c': 3, 'd': 4}
Actually, in simple words, we can say that a join between tables is an extension of a single-table SELECT statement but it involves the additional complexities:Need to specify all the tablesWe need to specify all the tables in FROM clause which are involved in the join. It is in contrast with the SELECT statement in which only one table name is necessary.Need to specify the matching conditionsWe just need to specify the matching conditions based on which a join matches the records in one table with a record in another table. The conditions often are given in the WHERE clause, ... Read More
JAVA_HOME refers to jdk/bin directory. It is used by a java based application.
Operator precedence determines the grouping of terms in an expression. This affects how an expression is evaluated. Certain operators have higher precedence than others; for example, the multiplication operator has higher precedence than the addition operator.Here, operators with the highest precedence appear at the top of the table, those with the lowest appear at the bottom. Within an expression, higher precedence operators will be evaluated first.CategoryOperatorAssociativityPostfix>() [] . (dot operator)Left to rightUnary>++ - - ! ~Right to leftMultiplicative>* /Left to rightAdditive>+ -Left to rightShift>>> >>> >= < == !=Left to rightBitwise AND>&Left to rightBitwise XOR>^Left to rightBitwise OR>|Left to ... Read More
MySQL NOT RLIKE operator can be used to check for a pattern which is not present within an expression. The syntax for NOT RLIKE is as follows − Syntax NOT RLIKE Pat_not_for_match Here Pat_not_for_match is the pattern which is not to be matched with the expression. Example mysql> Select Id, Name from Student WHERE Name NOT RLIKE '^H'; +------+---------+ | Id | Name | +------+---------+ | 1 | Gaurav | | 2 | Aarav | | 20 | Gaurav | ... Read More