Loop a multidimensional array and only print two specific column values per row

Using a foreach loop without a key: foreach($array as $item) { echo $item[‘filename’]; echo $item[‘filepath’]; // To know what’s in $item echo ‘<pre>’; var_dump($item); } Using a foreach loop with a key: foreach($array as $i => $item) { echo $array[$i][‘filename’]; echo $array[$i][‘filepath’]; // $array[$i] is same as $item } Using a for loop: for ($i … Read more

Is there a difference between “pass” and “continue” in a for loop in Python?

Yes, they do completely different things. pass simply does nothing, while continue goes on with the next loop iteration. In your example, the difference would become apparent if you added another statement after the if: After executing pass, this further statement would be executed. After continue, it wouldn’t. >>> a = [0, 1, 2] >>> … Read more

Validate the type of input in a do-while loop

The problem is that “scanf()” can leave unread data in your input buffer. Hence the “infinite loop”. Another issue is that you should validate the return value from scanf(). If you expect one integer value … and scanf returns “0” items read … then you know something went wrong. Here is an example: #include <stdio.h> … Read more

Scala “

To augment Dave’s answer, here is a translation schema for ‘for-comprehensions’ from Scala language specification: A comprehension for (enums) yield e evaluates expression e for each binding generated by the enumerators enums. An enumerator sequence always starts with a generator; this can be followed by further generators, value definitions, or guards. A generator p <- … Read more