conditional-statements

Adding conditions to Containable in CakePHP

六月ゝ 毕业季﹏ 提交于 2019-12-05 06:34:54
Previously I was relying on recursive, but I didn't get solution for some, then I found that Containable works fine for these. I am developing a movie review website. In that I need to show the list of movies which is related to a particular Genre. I have this below code: //example $genre = "drama"; $options = array( 'contain' => array( 'Movie', 'MoveiGenre.Genre' => array( 'conditions' => array('MovieGenre.Genre.name = "'.$genre.'"') ), 'MovieGenre.Genre.name' ), 'recursive' => 2, 'limit' => 10 ); $this->paginate = $options; $this->set('movies',$this->paginate()); The real problem starts here

Would it be pythonic to use `or`, similar to how PHP would use `or die()`?

喜欢而已 提交于 2019-12-05 04:59:10
Is it pythonic to use or , similar to how PHP would use or die() ? I have been using quiet or print(stuff) instead of if verbose: print(stuff) lately. I think it looks nicer, they do the same thing, and it saves on a line. Would one be better than the other in terms of performance? The bytecode for both look pretty much the same to me, but I don't really know what I'm looking at... or 2 0 LOAD_FAST 0 (quiet) 3 JUMP_IF_TRUE_OR_POP 15 6 LOAD_GLOBAL 0 (print) 9 LOAD_CONST 1 ('foo') 12 CALL_FUNCTION 1 (1 positional, 0 keyword pair) >> 15 POP_TOP 16 LOAD_CONST 0 (None) 19 RETURN_VALUE vs if 2 0

C Confused on how to initialize and implement a pthread mutex and condition variable

。_饼干妹妹 提交于 2019-12-05 04:51:29
问题 I'm a little bit confused on how to initialize and implement a pthread mutex and condition variable. The goal of the program is to have producers place a set number of ints in a queue and consumers take the ints out of the queue. I must also be able to define the number of producer and consumer threads that are created. In the starter code, I am give these: // Locks & Condition Variables pthread_mutex_t lock; // Lock shared resources among theads pthread_cond_t full; // Condition indicating

If variable equals value php

风流意气都作罢 提交于 2019-12-05 04:47:51
I am trying to do a check before the data inserts into the MySQL query. Here is the code; $userid = ($vbulletin->userinfo['userid']); $sql3 = mysql_query("SELECT * FROM table WHERE ID='$_POST[hiddenID]'"); while ($row = mysql_fetch_array($sql3)){ $toon = $row['toonname']; $laff = $row['tlaff']; $type = $row['ttype']; if ($type == 1){ $type == "Bear"; } elseif ($type == 2){ $type == "Cat"; } elseif ($type == 3){ $type == "Dog"; } } However, this isn't working. Basically, there are different values in the 'table' for each type. 1 means Bear, 2 means Cat, and 3 means Dog. Thanks to whomever can

Rails Date compared to Date.today

混江龙づ霸主 提交于 2019-12-05 02:44:40
问题 I have a birth_date variable in the Date format. I want to compare it to Date.today as shown below. The problem is it is coming back false because it wants to compare the year as well. It is a birthday so I don't care about the year just trying to see if birth_date (month and day) is equal to Date.today.day.month. Any ideas? bdays = Soldier.find(:all, :conditions => ["birth_date LIKE ?", Date.today] ) 回答1: You will need to break up your date, because you want to ignore the year. You will need

Conditional statements in a class, but outside of scope of the function

泪湿孤枕 提交于 2019-12-05 02:23:32
We know that with notation: class Foo(object): a = 1 def __init__(self): self.b = 2 def c(self): print('c') we can create static variable Foo.a , 'normal' variable b , which will be available after creating and instance of Foo , and method c Today I was really surprised, that I can use conditional statements in a class, but outside of scope of the function class C(): if True: a = 1 b = 2 Languages like C++/Java, taught me that legal notation is similar to: class Name(): variable = <expression> Could you describe other rules, which refer to this specific scope? How I should name this scope? The

Conditional compilation for .NET 4 [duplicate]

你说的曾经没有我的故事 提交于 2019-12-05 02:19:39
This question already has answers here : Closed 6 years ago . Possible Duplicate: Conditional compilation and framework targets I have some code that works in .NET 4, but it does not work in .NET 3.5. In .NET 3.5 it requires to use interop calls to Windows. I would like using a "ifdef" to use a different code path in both cases (eventually I will deprecate the .NET 3.5 code). Is there a pre-defined directive value to identify when the code is compiled with .NET 4? Is there a good link with all the predefined directives ( DEBUG , TRACE , etc.)? The page below only gives the directives, but not

Is it safe to check if a pointer is null, then dereference it in the same if statement?

那年仲夏 提交于 2019-12-05 01:24:57
Is the following code safe if a null pointer is passed in? if(ptr && *ptr == value) { //do something } Does the order of the checks matter? Does it work if I change it to this? if(*ptr == value && ptr) { //do something } The former is correct and safe, the latter is not. The built-in && operator has short-circuit semantics , meaning that the second argument is evaluated if and only if the first one is true. (This is not the case for overloaded operators.) Caribou Yes (1) is safe because of short circuiting. This is the way that the logical statement is evaluated. If the first part of the &&

Pointer dereferencing overhead vs branching / conditional statements

穿精又带淫゛_ 提交于 2019-12-05 01:12:00
In heavy loops, such as ones found in game applications, there could be many factors that decide what part of the loop body is executed (for example, a character object will be updated differently depending on its current state) and so instead of doing: void my_loop_function(int dt) { if (conditionX && conditionY) doFoo(); else doBar(); ... } I am used to using a function pointer that points to a certain logic function corresponding to the character's current state , as in: void (*updater)(int); void something_happens() { updater = &doFoo; } void something_else_happens() { updater = &doBar; }

Is there a possibility of multiple statements inside a conditional statement's body?

荒凉一梦 提交于 2019-12-04 22:44:43
I'm primarily a C++ (thus an OO/imperative) programmer and I find it quite bizarre that you can only have one statement per evaluation in a conditional statement such as an if-statement in Scheme, a functional language. For example: (let ((arg1 0) (arg2 1)) (if (> arg1 arg2) arg1 arg2))) Erroneous example: (let ((arg1 0) (arg2 1)) (if (> arg1 arg2) (arg1 (display "cool")) (arg2 (display "not cool")))) gives me an error of a type "procedure application: expected procedure, given: 2; arguments were: #void" That can be solved by placing that said conditional statement into different statements