Update This version adds all already seen words to the exclude set: exclude = set(‘why kid is upset’.split()) list_of_strings = [‘why my kid is upset’, ‘why beautiful kid is upset’, ‘why my 15 years old kid is upset’, ‘why my kid is always upset’] res = [] for item in list_of_strings: words = item.split() res.append(‘ … Read more
Unless your object is already in binary buffer format, there is not performance benefit in converting it into that format and back. For some reason, this is something most Web Socket users fail to grasp – questions like this are asked all the time. My answer is always the same – if your concern is … Read more
Firstly, this shouldn’t be a Java Specific question. Secondly, a quick google search could have given you this answer Including this one -> SCIENTIFIC CALCULATOR USING C-SHARP(C#.NET), which basically covers all the scientific functions you’re looking for including the Radian to Degree conversion solved Scientific Calculator in C# [closed]
This is a good use case for reduce. const rawData = [ { date: ‘3/10/2019’, a: ‘123’, }, { date: ‘3/10/2019’, b: ‘456’, }, { date: ‘3/11/2019’, a: ‘789’, }, { date: ‘3/11/2019’, b: ‘012’, }, { date: ‘3/11/2019’, c: ‘345’, } ]; const groupByDate = array => array.reduce((results, item) => { const current = … Read more
p is a pointer to a structure – this means that p ‘holds’ the starting address for a structure in memory — Hence: p = d.elmts+i represents the starting address in memory, for the current structure (i represents the address offset). In this example memory has been allocated for ‘dictSize’ structures (i.e. the number of … Read more
Solution: val_A = [] val_B = [] val_A.append(A1) val_B.append(B1) for i in range(5): val_A.append(val_B[-1] * Z2) val_B.append(val_A[-1] * Z1) Demo: (On a simple test case, to show that it works) # Manual Z1 = 2 Z2 = 3 A1 = 5 B1 = 7 A2 = B1*Z2 B2 = A2*Z1 A3 = B2*Z2 B3 = … Read more
Java is statically typed so you can’t point a variable to an instantiated object without declaring the class. You can create classes without a pointer but they will just be collected by the garbage collection machine unless you’re passing them to something that uses the new object you’re creating. This is nothing in Java: myObject … Read more
I am not sure why are you looking for LINQ less solution for this as this could be done very easily and efficiently by it. I strongly suggest you to use it and do it like below : var _group = list.GroupBy(i => i); string result = “”; foreach (var grp in _group) result += … Read more
The unary ~ operator has higher precedence than == or =~ so this: string ==~ /^ABC/ is just a confusing way of writing: string == (~/^ABC/) But what does Regexp#~ do? The fine manual says: ~ rxp → integer or nil Match—Matches rxp against the contents of $_. Equivalent to rxp =~ $_. and $_ … Read more
I shouldn’t, but check this out: Matcher m = Pattern.compile(test.replace(“{“, “\\{(“).replace(“}”, “)\\}”)).matcher(test); m.find(); for (int i = 1; i <= m.groupCount(); i++) { System.out.println(m.group(i)); } Ideone Demo 1 solved Reading data within parenthesis
mysqli_query does not return your number directly. It returns a mysqli_result as you can see here. To get the row you have parsed, you should fetch it first: $row = mysqli_fetch_assoc($result) A lot of information on using mysqli can be found here. 6 solved Object of class mysqli_result could not be converted to int – … Read more
It appears as though you have some illegal characters in the body of your expression for MyView: Change: public DCMViewer MyView { get **=>** myView; set => myView = value; } To: public DCMViewer MyView { get => myView; set => myView = value; I did a test on the syntax and received the same … Read more
After looking into defining a view interface, I decided to use range-v3. There are several things missing from std::ranges https://stackoverflow.com/a/68172842/11998382, and until they are added in future standards, it is sensible to use range-v3 rather than repeatedly attempting non-trivial implementations yourself. solved Access index of current element in range-for loop c++20
This really is a simple one liner via map and delete or map and ES6 destructuring as shown in the 2 examples bellow: var data = [{ “first”: “Linda”, “last”: “Donson”, “salary”: “4000USD” }, { “first”: “Mark”, “last”: “Sullivan”, “salary”: “3500USD” } ] console.log(data.map(x => delete(x.salary) && x)) Also if you are concerned about mutating … Read more
Lexing is not specific to C (in the sense that you’ll use similar techniques in other programming languages). You could do that with hand-written code (using finite automaton coding techniques). You could use a lexer generator like flex. You might even use regexprs, e.g. regex.h functions on POSIX systems. Parsing is also a well known … Read more