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What is the copy-and-swap idiom?
...nd act as noise in the code; self-assignment rarely occurs, so most of the time this check is a waste. It would be better if the operator could work properly without it.
The second is that it only provides a basic exception guarantee. If new int[mSize] fails, *this will have been modified. (Namely, ...
Can I call jquery click() to follow an link if I haven't bound an event handler to it with bind
I have a timer in my JavaScript which needs to emulate clicking a link to go to another page once the time elapses. To do this I'm using jQuery's click() function. I have used $().trigger() and window.location also, and I can make it work as intended with all three.
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Run cron job only if it isn't already running
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Best solution, I've been using this for a really long time.
– soger
Jun 22 '16 at 12:27
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When should we implement Serializable interface?
... sequence of 1s and 0s (possibly
at another place, possibly at another
time) and reconstructing the original
complicated "something."
So, implement the Serializable interface when you need to store a copy of the object, send them to another process which runs on the same system or over the n...
Passing enum or object through an intent (the best solution)
... pending intents as they may survive updates. However, for the rest of the time, it should be ok.
It's important to note that other solutions, like using the name instead of the position, will also fail if we rename any of the values. Although, in those cases, we get an exception instead of the inc...
How to find the sum of an array of numbers
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I wonder if the execution time of reduce with a function(a, b) is comparable to a manual iteration and summation or if there is some considerable overhead included?
– Trilarion
Jan 7 '16 at 12:15
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What are some uses of template template parameters?
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I've been trying to think of good examples, and to be honest, most of the time this isn't necessary, but let's contrive an example. Let's pretend that std::vector doesn't have a typedef value_type.
So how would you write a function which can create variables of the right type for the vectors elem...
JavaScript file upload size validation
...d give them a nice friendly message if it is (so they don't spend all that time uploading only to get the result thrown away at the server), but you must also enforce that limit at the server, as all client-side limits (and other validations) can be circumvented.
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What's the best practice to round a float to 2 decimals? [duplicate]
... Android game I am working on, creating a new BigDecimal instance multiple times each frame accounted for 99.9% of my memory allocations, so something to watch out for. In my opinion @Evan Stin's method 2 is the best answer, it's faster and doesn't leave anything behind.
– hamh...
Can regular expressions be used to match nested patterns? [duplicate]
... expression that matches a nested pattern that occurs an unknown number of times? For example, can a regular expression match an opening and closing brace when there are an unknown number of open/close braces nested within the outer braces?
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