I am looking at a practice test that doesn\'t have explanations about the correct answers. The question I\'m confused ab开发者_开发问答out basically asks why the following SQL statement can never work
Sometimes I need to use several disposable objects within a function. Most common case is having StreamReader and StreamWriter but sometimes it\'s even more than this.
I am returning the variable I am creating in a using statement inside the using statement (sounds funny):
The following 2 statements are to join using gifts.giftID = sentgifts.giftID: mysql> select * from gifts, sen开发者_JAVA百科tgifts using (giftID);
Why is the ( ) mandatory in the SQL statement select * from gifts INNER JOIN开发者_如何学C sentgifts using (giftID);
//using namespace std; using std::ifstream; using std::ofstream; using std::cout; cla开发者_JS百科ss Dog
Suppose that I have the following code: private void UpdateDB(QuoteDataSet dataSet, Strint tableName) {
I see this: using (StreamWriter sw = new StreamWriter(\"file.txt\")) { // d0 w0rk s0n } Everything I try to find info on is does not explain what this doing, and instead gives me stuff about 开发者
Consider the following code: // module level declaration Socket _client; void ProcessSocket() { _client = GetSocketFromSomewhere();
Is it safe to use the using statement on a (potentially) null object? Consider the following example: class Test {
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