This is the purpose of Visibility. In Block 2 your property is protected. This means it can only be accessed the class itself (Database2) and by inherited classes. The error occurs when you try to echo the variable from the outside. The same goes for the method in Block 3. The Constuctor can be protected … Read more
Your month comparisons are not correct. February is the 2nd month, not the 5th. As the second month, it doesn’t have 30 days (at least since I’ve been alive). You may want to swap those constants. 1 solved Usaco. Friday the thirteen. What is wrong with my code?
You were almost there: for (i = 1; i <= 7; ++i) { for (j = 1; j <= 7; j++) { if (j <= i) document.write(j); else document.write(“*”); } document.write(“ ”); } Your code with comments: for (i = 1; i <= 7; ++i) { // This for should loop over your blocks document.write(i); // … Read more
I used to have the same problem before , And this is my solution df1=df[[‘X’,’Y’]].apply(sorted,1) df.groupby([df1.X,df1.Y])[‘count’].sum().reset_index(name=”count”) Out[400]: X Y count 0 A B 3 1 C D 8 solved Aggregate symmetric pairs pandas
You need to add events to your functions. Have a read through the serverless documentation for events. Currently serverless supports lambdas to be invoked by API GateWay, Kinesis, DynamoDB, S3, Schedule, SNS, and Alexa Skill. (read more) So in this case, adding a required events tag should solve your problem. … functions: smartHome: handler: ${file(./${env:DEPLOY_FILE_NAME_STAGE}):handler} … Read more
Where is my mistake? There are possibly three mistakes. The first is that ‘variable_’ + ‘a’ obviously isn’t equal to ‘variable_1′. The second is the quoting in the argument to exec. Do for x in list: exec(“variable_%s=””” % x) to get variable_a etc. The third mistake is that you’re not using a list or dict … Read more
You CAN use message collectors. However, you need to have it in a variable. Here is an example: msg.author.send(‘some prompt’).then(m => { let i = 0; var collector = m.channel.createMessageCollector(me => me.author.id === msg.author.id && me.channel === m.channel, {max: /*some number*/}) collector.on(‘collect’, collected => { if(collected.content === ‘end’) return collector.stop(); //basically if you want to … Read more
First line: You create a pointer variable to a char, then you initialize it to address zero (NULL pointer). Second line: you try to write a zero to the address where pointer is pointing to. Address zero is outside of your process’ writable virtual memory area, so you get a segmentation fault. solved Pointer making … Read more
You seem to be approaching this as if it is C. That is understandable, but overcomplicating your Python. Let’s consider just a few things. Overwriting an input variable immediately: def buildIndex(m, d): d = {} In Python we don’t need to declare variables or make room for them. So this is much more clearly expressed … Read more
If you have a lot of data in your table, this wouldn’t be ideal. But you could do something like. WHERE REPLACE(column, ” “, “”) LIKE “%lookat%” 2 solved Regular expression to match a string with out space with string with spaces [closed]
See Short-circuit evaluation. Essentially what’s happening is that as l++=3 which is not 0, it evaluates to True (only 0 would be False). Thus, the second part of the expression after || is not evaluated. 3 solved Output of the below C Code [duplicate]
The member function that you have defined (node(…)) is a constructor and lets the compiler know what to do when you create an object on type node. For example, in your code, you use this statement in your push function: t = new node(a, t);. Compiler has to know how to create a new node … Read more
document.addEventListener(“DOMContentLoaded”, function(){ var ele = document.querySelectorAll(“address”); for(var i = 0; i < ele.length; i++){ var link = “<a href=”http://maps.google.com/maps?q=” + encodeURIComponent( ele[i].innerText ) + “” target=”_blank”>” + ele[i].innerText + “</a>”; ele[i].innerHTML = link; } }); 2 solved How to convert JQuery to Pure Javascript? [closed]
try this : select ID, count([Match ID]) as [TotalMatch ID] from ( SELECT TblMatch.CustomerID1 as ID, TblMatch.[Match ID] FROM TblMatch UNION ALL SELECT TblMatch.CustomerID2 as ID, TblMatch.[Match ID] FROM TblMatch ) tmp group by ID 0 solved SQL Union with group by and sum
circleType::setRadius; double radius = circle.getRadius; The first line doesn’t do anything. The second line tries to set a variable of type double equal to a function. Perhaps you want to call these functions? This is what non-operator member function calls look like in C++: double area = circle.areaCir(radius); double circumferance = circle.circumCir(radius); circle.printCir(circumferance, area); So … Read more