It’s worth pointing out that there is a difference in behavior in the implementation of console.log. Under node v0.10.19 you do not get an error; you simply see this: > [1,2,3,4,5].forEach(console.log); 1 0 [ 1, 2, 3, 4, 5 ] 2 1 [ 1, 2, 3, 4, 5 ] 3 2 [ 1, 2, 3, … Read more
You cannot change the iteration variable of a foreach-loop, but you can change members of the iteration variable. Therefore change the ChangeName method to private void ChangeName(StudentDTO studentDTO) { studentDTO.name = SomeName; } Note that studentDTO is a reference type. Therefore there is no need to return the changed student. What the ChangeName method gets, … Read more
The source of your confusion is probably CMake’s peculiar interpretation of quoted strings. For example, the following all iterate over the list of strings correctly: (1) foreach(LETTER a b c) […] (2) foreach(LETTER a;b;c) […] (3) set(MYLIST “a;b;c”) foreach(LETTER ${MYLIST}) […] The only case where this does not work is (4) foreach(LETTER “a;b;c”) […] The … Read more
No, it won’t. The result of the first call will be stored in the compiled code in a temporary variable. From Effective Java 2nd. Ed., Item 46: Note that there is no performance penalty for using the for-each loop, even for arrays. In fact, it may offer a slight performance advantage over an ordinary for … Read more
MDN states: array.forEach(callback[, thisArg]) If a thisArg parameter is provided to forEach, it will be used as the this value for each callback invocation as if callback.call(thisArg, element, index, array) was called. If thisArg is undefined or null, the this value within the function depends on whether the function is in strict mode or not … Read more
To understand why the two methods both exist, you need to first understand what are Iterator and Iterable. An Iterator basically is something that has a “next element” and usually, an end. An Iterable is something that contains elements in a finite or infinite sequence and hence, can be iterated over by keep getting the … Read more
You can write a helper method pretty easily: public static IEnumerable<DateTime> AllDatesInMonth(int year, int month) { int days = DateTime.DaysInMonth(year, month); for (int day = 1; day <= days; day++) { yield return new DateTime(year, month, day); } } Then call it with: foreach (DateTime date in AllDatesInMonth(2012, 1)) This is probably overkill for something … Read more
You can define a template to match on script/command and eliminate the xsl:for-each concat() can be used to shorten the expression and save you from explicitly inserting so many <xsl:text> and <xsl:value-of> elements. The use of an entity reference 
 for the carriage return, rather than relying on preserving the line-break between your <xsl:text> element … Read more
Here’s the mysql reference for cursors. So I’m guessing it’s something like this: DECLARE done INT DEFAULT 0; DECLARE products_id INT; DECLARE result varchar(4000); DECLARE cur1 CURSOR FOR SELECT products_id FROM sets_products WHERE set_id = 1; DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1; OPEN cur1; REPEAT FETCH cur1 INTO products_id; IF NOT … Read more
Why doesn’t the enhanced for loop just accept an iterator? I want to gather a few of the potential reasons from the various answers as to why the for-each loop doesn’t simply accept an iterator. Convenience: The for-each loop was created partly for convenience for the common operation of performing an action given each element … Read more