conditional-statements

I have script like this $number = range(0, 9); when I have condition like this if (in_array('@', $number) === true) { echo "true"; }else "false"; and output: true and my question is why the symbols is the same whit any number in array $number?? I want symbols just symbols not number. example I want like this if (in_array('@', $number) === true) { echo "true"; }else "false"; output : false From the documentation for in_array() : If the third parameter strict is set to TRUE then the in_array() function will also check the types of the needle in the haystack. In PHP, casting any string that doesn

This question already has an answer here: How to sort a dataframe by multiple column(s) 19 answers I have the following data frame in R: DataTable <- data.frame( Name = c("Nelle","Alex","Thomas","Jeff","Rodger","Michi"), Age = c(17, 18, 18, 16, 16, 16), Grade = c(1,5,3,2,2,4) ) Name Age Grade 1 Nelle 17 1 2 Alex 18 5 3 Thomas 18 3 4 Jeff 16 2 5 Rodger 16 2 6 Michi 16 4 Now ill will sort this data frame by its Age column. No problem so far: DataTable_sort_age <- DataTable[with(DataTable, order(DataTable[,2])),] Name Age Grade 4 Jeff 16 2 5 Rodger 16 2 6 Michi 16 4 1 Nelle 17 1 2 Alex 18 5 3

I am going through this code . I would like to know what is meant by -le in the following code segment. if [ $stage -le 2 ]; then In one of the questions it says that -le stands for <= of strings, but that is in Perl. Is it the same here as well? Further, I would like to know if that $stage variable automatically gets updated. It has been initialized to 0 at the beginning, but later, how does that get incremented? -le checks if the value of left operand is less than or equal to ( <= ) the value of right operand, if yes then condition becomes true. consider: $a=10 $b=20 then [ $a -le $b ] is

I have a set of data in the following format: Resp | Q1 | Q2 P1 | 4 | 5 P2 | 1 | 2 P3 | 4 | 3 P4 | 6 | 4 I'd like to show the count and % of people who gave an answer greater than 3. So in this case, the output would be: Question | Count | Percent Q1 | 3 | 75% Q2 | 2 | 50% Any suggestions? Although it sounds like a fairly easy thing, it is a bit more complicated. Firstly your data is not row based so you will have to pivot it. Load your data into Tableau In the DataSource Screen choose column Q1 and Q1, right click on them and chosse "Pivot" Name the column with the answers "Answers" (just for

I am trying to color points of an pandas dataframe dependend on TWO conditions. Example: If value of col1 > a (float) AND value of col2- value of col3 < b (float), then value of col 4 = string, else: other string. I have tried so many different ways now and everything I found online was only depending on one condition. My example code always raises the Error: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). Here's the code. Tried several variations without success. df = pd.DataFrame() df['A'] = range(10) df['B'] = range(11,21,1) df['C'] = range(20

I have stumped on this as I am a total beginner in MySql. Here is a the basic of how the two tables are formed Table 1 id,product_id, product_name Table 2 id,product_id,active Now i know how to do a select statement to query the results from one table but when I have to involve two, I am lost. Not sure if I have to use inner join, left join etc. So how can I return the results of the product_id from table 1 only if in table 2 is active? It's pretty simple to join two tables: select t1.* from Table1 t1 join Table2 t2 on t1.product_id = t2.product_id where t2.active = 'Y' You could use JOIN (as

How are multiple range queries implemented in CouchDB? For a single range condition, startkey and endkey combination works fine, but the same thing is not working with a multiple range condition. My View function is like this: "function(doc){ if ((doc['couchrest-type'] == 'Item') && doc['loan_name']&& doc['loan_period']&& doc['loan_amount']) { emit([doc['template_id'], doc['loan_name'],doc['loan_period'], doc['loan_amount']],null);}}" I need to get the whole docs with loan_period > 5 and loan_amount > 30000. My startkey and endkey parameters are like this: params = {:startkey =>[