comparison

问题 Issue: Draw checkboxes and assign ID from query1 to elementId and values assigned to checkbox from query2. But the issue is query 2 not always returns full 9 values as compared to array1. And I want to replace missing values in query 2 with zero's after comparing the array1 values. My Approach: Get result set of two queries and query 1 resultset = $tresult; query 1 resultset = $assignedTiles; $a1 = array(); while ($row = mysql_fetch_row($tresult)){ $a1[] = $row; } $a2 = array(); if (mysql_num

问题 I have an array of countries with one having a Latin character "Å": $country["af"] = "Afghanistan"; $country["ax"] = "Åland Islands"; $country["al"] = "Albania"; While looping through this array and performing a comparison of the first character of the country name, I cannot match the Latin character. foreach($country as $cc => $name) { if($name[0] == "Å") { echo "matched"; } else { echo $name[0]; } } The result I got is: A�A Why does the Latin character Å became � and how do I perform a

问题 In looking at similar questions like: Getting trigger to insert changed column values only in audit table Audit Logging Strategies I would like to take this one step further and compare the updated data to see if it actually has been updated... I'm not sure if this is ideal (performance wise). Background: We have some data that is periodically updated by the user. When this data is updated, I would like to compare what they submitted with what is already there and what they submitted, to make

问题 I need to be able to compare the number of whole days between two dates in ActionScript, is this possible? I'd like to test if one date is 7 days or less after today, and if so is it one day or less (if it's before today this also counts). The workaround I have in place is using the .time part of the date field: // Get the diffence between the current date and the due date var dateDiff:Date = new Date(); dateDiff.setTime (dueDate.time - currentDate.time); if (dateDiff.time < ( 1 * 24 * 60 *

问题 I want to create a function that performs a certain task only when a hex value indicates an upper or lower case letter, i.e., when the hex code is between 20 and 7A. Is there a way to make a statement in python that is logically equivalent to: if a >= 20 and a <= 7A: perform stuff ? Do I just throw a 0x in front of it and magic happens? 回答1: yes ... you just throw a 0x and it becomes numeric .... or int("7A",16) == 0x7A 0x20 <= a <= 0x7A you can also chain comparison operators like this

问题 I am using the R package nparcomp recently and I used it to test the significant difference of my response variable between the categories. I found out that the nparcomp function can not deal with large size of data (number of rows>5000). For example, here is my code: a<-nparcomp(oc20_kgm2~ decade, data=dat, asy.method = "mult.t", type = "Tukey",alternative = "two.sided", plot.simci = TRUE, info = FALSE) summary(a) where, oc20_kgm2 is my response variable, decade is my factor (with 10

问题 Say I want to check to see whether a subclass has implemented one of it's parent's virtual functions (never mind whether this smells of bad architecture... it's an exercise). If I wanted to see if two regular functions were identical, I could just check &f == &g . // Plain old functions void f() {} void g() {} ... std::cout << "&f " << &f << "\n"; // "1" OK, for some reason func ptrs are converted std::cout << "&g " << &f << "\n"; // "1" to booleans when printed. I can dig it. std::cout << "

问题 I am stuck with a problem here. I am trying to compare items in a list to another list with much more items using linq. For example: list 1: 10,15,20 list 2: 10,13,14,15,20,30,45,54,67,87 I should get TRUE if all the items in list 1 occur in list 2 . So the example above should return TRUE Like you can see I can't use sequenceEquals Any ideas? EDIT: list2 is actually not a list it is a column in sql thas has following values: <id>673</id><id>698</id><id>735</id><id>1118</id><id>1120</id><id

问题 What's going on here? int zero = 0; double x = 0; object y = x; Console.WriteLine(x.Equals(zero)); // True Console.WriteLine(y.Equals(zero)); // False 回答1: Here, you're calling two different methods - Double.Equals(double) and Object.Equals(object) . For the first call, int is implicitly convertable to double , so the input to the method is a double and it does an equality check between the two double s. However, for the second call, the int is not being cast to a double , it's only being

问题 Hey guys so I am trying to compare the rows and columns of a 2d array to see if there are any pairs of letters directly near each other. I can make the array no problem, but my only problem is I have no idea how to go about comparing the rows separately, and then the columns..If you could help me out at all that would be amazing! thank you! #include<stdio.h> #include<stdlib.h> #include<time.h> int main( void ) { int x = 0; int y = 0; int countX = 0; int countY = 0; srandom( (unsigned) time