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Using generic std::function objects with member functions in one class
...tip: member function pointer can be implicitly cast to std::function, with extra this as it's first parameter, like std::function<void(Foo*, int, int)> = &Foo::doSomethingArgs
– landerlyoung
Nov 25 '19 at 6:44
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jQuery Determine if a matched class has a given id
... element has certain qualities. You can test a jQuery collection against a string selector, an HTML Element, or another jQuery object. In this case, we'll just check it against a string selector:
$(".bar:first").is("#foo"); // TRUE if first '.bar' in document is also '#foo'
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Replace comma with newline in sed on MacOS?
... It is not wokring in bash shell $ tr , '\n' aitr usage: tr [-Ccsu] string1 string2 tr [-Ccu] -d string1 tr [-Ccu] -s string1 tr [-Ccu] -ds string1 string2
– Learner
Jan 20 '16 at 18:41
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YouTube iframe API: how do I control an iframe player that's already in the HTML?
... https://developers.google.com/youtube/js_api_reference
* @param String frame_id The id of (the div containing) the frame
* @param String func Desired function to call, eg. "playVideo"
* (Function) Function to call when the player is ready.
* @param Array args (opti...
Why does one often see “null != variable” instead of “variable != null” in C#?
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In earlier times, people would forget the '!' (or the extra '=' for equality, which is more difficult to spot) and do an assignment instead of a comparison. putting the null in front eliminates the possibility for the bug, since null is not an l-value (I.E. it can't be assigned ...
NSURLRequest setting the HTTP header
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for Swift
let url: NSURL = NSURL(string: APIBaseURL + "&login=1951&pass=1234")!
var params = ["login":"1951", "pass":"1234"]
request = NSMutableURLRequest(URL:url)
request.HTTPMethod = "POST"
var err: NSError?
request.HTTPBody = NSJSONSerialization.d...
How can I put a ListView into a ScrollView without it collapsing?
... in charge of ListView for the past 2 or 3 years :) ListView does a lot of extra work to optimize the use of adapters. Trying to work around it will still cause ListView to do a lot of work a LinearLayout wouldn't have to do. I won't go into the details because there's not enough room here to explai...
Rails params explained?
...re really just a series of key-value pairs where the key and the value are strings, but Ruby on Rails has a special syntax for making the params be a hash with hashes inside. For example, if the user's browser requested
http://www.example.com/?vote[item_id]=1&vote[user_id]=2
then params[:vote...
What is the difference between shallow copy, deepcopy and normal assignment operation?
...is statement is true only for mutable objects and not immutable types like string, float, tuples.
– Neerav
May 7 '14 at 0:03
1
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Iterate an iterator by chunks (of n) in Python? [duplicate]
...ry and take much longer to run. Why do that if you don't have to? At 200K, extra temp storage makes the overall program take 3.5x longer to run than with it removed. Just that one change. So it is a pretty big deal. NumPy won't work because the iterator is a database cursor, not a list of numbers.
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