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How to express a One-To-Many relationship in Django
... the model field types. I'm sure there's a way to do this, so I'm not sure what I'm missing. I essentially have something like this:
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Python List vs. Array - when to use?
...nstant time, whereas in linked list, it takes order 'n' in the worst case. What's the lookup time of i'th element in a python list?
– Nithish Inpursuit Ofhappiness
Jul 19 '17 at 2:16
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Turn a string into a valid filename?
...s or combination of valid chars that are illegal (like ".."), for example, what you say would allow a filename named " . txt" which I think is not valid on Windows. As this is the most simple approach I'd try to remove whitespace from the valid_chars and prepend a known valid string in case of error...
How to view the assembly behind the code using Visual C++?
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@MichaelPetch: oh, turns out that is what I had tried. .c_str() prints what looks like a pointer. If you follow the link, you'll see code to hexdump a std::string (disabled with #if 0). It turns out the string is fine, but cout isn't getting it to the web bro...
How can I change the color of a Google Maps marker?
...ave to create a whole new icon somehow? If I do have to create a new icon, what's the easiest way to do that?
8 Answers
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String.replaceAll without RegEx
...acters will be given the special meaning. That's the complete opposite of what Pattern.quote() does, and what the OP was asking for (quote() says, "treat the string as a literal"). Maybe you could expand on what "undesirable results" you're talking about.
– Mark Peters
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Why am I not getting a java.util.ConcurrentModificationException in this example?
...we will reach the next() method only if hasNext() delivered true, which is what is called by the for each to check if the boundary is met. In your remove method, when hasNext() checks if it needs to return another element, it will see that it returned two elements, and now after one element was remo...
How to print a int64_t type in C
...'s absolutely hideous. It's ghastly. It's nauseating. It's embarrassing is what it is. Or at least they should be embarrassed, the lot that introduced this. I've never seen these macros but do what this answer and the comments - yours included - suggest.
– Pryftan
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How can you do anything useful without mutable state?
...e each frame simply creates a brand new object with the desired changes of whatever stateless objects needs updating. The pseudocode for this might be:
// imperative version
pacman = new pacman(0, 0)
while true
if key = UP then pacman.y++
elif key = DOWN then pacman.y--
elif key = LEFT ...
Generic List - moving an item within the list
...nt.
The ObservableCollection(T) class has a Move method that does exactly what you want.
public void Move(int oldIndex, int newIndex)
Underneath it is basically implemented like this.
T item = base[oldIndex];
base.RemoveItem(oldIndex);
base.InsertItem(newIndex, item);
So as you can see the sw...