sibi | V2EX 撕逼大战 | Map library

I don't see why it could potentially not work. You mentioned that if you use execute outside of this function it works. So leave it the way it works because That's recommended due to Single responsibility principle.

Your validator should not be responsible for executing statements but only for what its name says = validation.

The only thing that validator should do is to return true or false and upon that decision, you should make execution or not so change your code to the following:

Sure, just write the bytes you want:

One of the Garbage Collector's root objects are local variables in an any thread method stack. So, an object will not be garbage collected in the bounds of this method, because here is a strong reference to it inside the active method. But if you are going to ignore this method's return value, in the next few GC's collecting cycles, this object will be collected (because no more references to it left) and memory from it's storing will be reclaimed.

It's actually far easier than you're making it on yourself.

In your above code, you're running $(this).parent().next().slideToggle().siblings('.content').slideUp(). In addition to toggling the next element in the DOM (the related .content), you're also sliding up all of the other .content elements.

As you simply want to toggle the related content, all you need to do is find the very next element, and slideToggle() that; it's always going to be a .content element.

Your second line $('.ind').toggle(this).nextAll().preventDefault(); appears to be attempting to 'correct' the behaviour from your first line, and can be omitted entirely.

Here's the updated code:

I still find the question very confusing, but in the interest of moving forward, consider this as a starting point:

XSLT 2.0

Do you have a reason for using

The problem is not that you were missing the symmetry call, but that you added the at 2 modifier when invoking the tactic. Since the goal at that point has only one occurrence of the left-hand side of app_nil_r (that is, rev l2 ++ []), the rewrite tactic gets confused and does not do anything. If you replace at 2 by at 1, or simply delete it, the problem goes away. You can learn more about the at modifier in the Coq manual.

The way you're building this is broken. You have top: -363px; on .contenu and that's the reason footer is so low. The position is shifted but technically that space is still occupied. You never declared absolute positioning for that element, which would take it out of the flow.

However, all of this is the wrong way to build such a layout regardless. You can do this with flexbox or floated elements.