The syntax in the conditional replacement is (?{GROUP_MATCHED?}REPLACEMENT_IF_YES:REPLACEMENT_IF_NO) The { and } are necessary to avoid ambiguity when you deal with groups higher than 9 and with named capture groups. Since Notepad++ uses Boost-Extended Format String Syntax, see this Boost documentation: The character ? begins a conditional expression, the general form is: ?Ntrue-expression:false-expression where N … Read more
private static final boolean enableFast = false; // … if (enableFast) { // This is removed at compile time } Conditionals like that shown above are evaluated at compile time. If instead you use this private static final boolean enableFast = “true”.equals(System.getProperty(“fast”)); Then any conditions dependent on enableFast will be evaluated by the JIT compiler. … Read more
The statement (4 > y > 1) is parsed as this: ((4 > y) > 1) The comparison operators < and > evaluate left-to-right. The 4 > y returns either 0 or 1 depending on if it’s true or not. Then the result is compared to 1. In this case, since 0 or 1 is … Read more
my.data.frame <- subset(data , V1 > 2 | V2 < 4) An alternative solution that mimics the behavior of this function and would be more appropriate for inclusion within a function body: new.data <- data[ which( data$V1 > 2 | data$V2 < 4) , ] Some people criticize the use of which as not needed, … Read more
Both AND and OR operators can shortcut. So && only tries the second expression if the first is true (truth-like, more specifically). The fact that the second operation does stuff (whatever the contents of foo() does) doesn’t matter because it’s not executed unless that first expression evaluates to something truthy. If it is truthy, it … Read more
If your DBMS does not impose limitations on which table you select from when you execute an insert, try: INSERT INTO x_table(instance, user, item) SELECT 919191, 123, 456 FROM dual WHERE NOT EXISTS (SELECT * FROM x_table WHERE user = 123 AND item = 456) In this, dual is a table with one row only … Read more
This is the conditional operator. $x ? $y : $z means “if $x is true, then use $y; otherwise use $z“. It also has a short form. $x ?: $z means “if $x is true, then use $x; otherwise use $z“. People will tell you that ?: is “the ternary operator”. This is wrong. ?: … Read more
This is not recommended practice for tests because tests should be deterministic. The right thing to do is: craft your request so that the response is 100% predictable. do not worry about code-duplication, this is sometimes necessary for tests ignore the dynamic data if it is not relevant to the Scenario use conditional logic to … Read more
So you are using Python2, where you can compare between list and strings and numbers. This helps to sort them out. Python2 [0]>1 => True However since Python3 this has been removed. Python3 [0]>1 Traceback (most recent call last): File “python”, line 1, in <module> TypeError: unorderable types: list() > int() Hope that explains, why … Read more
expression ? value 1 : value 2 if expression is true, result is value 1 (first condition) if expression is false ,result is value 2（second condition） Example: x = 1, x > 10 ? x : 10 expression: x > 10 => false value 1: x value 2: 10 result is 10