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Why rename synthesized properties in iOS with leading underscores? [duplicate]
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This is an artifact of a previous version of the Objective-C runtime.
Originally, @synthesize was used to create accessors methods, but the runtime still required that instance variables had to be instantiated explicitly:
@interface Foo...
How do I clear only a few specific objects from the workspace?
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what if I want to remove all variables with names start with letter A, say 'A001', 'A002'.... 'A999'. I don't want to type so many variable names. Thanks!
– user3768495
Sep 22 '15 at 16:04
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Why doesn't requests.get() return? What is the default timeout that requests.get() uses?
...u're right. None means infinite (or "wait until the connection is close"). If I pass timeout myself, it returns!
– Nawaz
Jul 22 '13 at 8:00
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How to apply bindValue method in LIMIT clause?
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would be cool if someone provided the explanation why this is so...from a design/security (or other) standpoint.
– Ross
Sep 25 '12 at 0:23
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How to check if an object is a generator object in python?
In python, how do I check if an object is a generator object?
9 Answers
9
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How to check if a file is a valid image file?
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excellent advice, now i just need to figure out what those numbers are. thanks :)
– Sujoy
May 20 '09 at 18:11
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Efficient way to determine number of digits in an integer
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Well, the most efficient way, presuming you know the size of the integer, would be a lookup. Should be faster than the much shorter logarithm based approach. If you don't care about counting the '-', remove the + 1.
// generic solution
template <class T>
int nu...
Python: Find in list
... you describe: Checking whether something is inside a list or not. As you know, you can use the in operator for that:
3 in [1, 2, 3] # => True
Filtering a collection
That is, finding all elements in a sequence that meet a certain condition. You can use list comprehension or generator expressi...
How to merge two arrays in JavaScript and de-duplicate items
...ternet Explorer Technical Preview.
But if you use Babel, you can have it now.
const input = [
[1, 2, 3],
[101, 2, 1, 10],
[2, 1]
];
const mergeDedupe = (arr) => {
return [...new Set([].concat(...arr))];
}
console.log('output', mergeDedupe(input));
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Link to “pin it” on pinterest without generating a button
...error when trying to pin: Parameter 'method' (value link) is not one of unknown, uploaded, scraped, bookmarklet, email, iphone, button, ipad, android, android_tablet, api_sdk, extension, api_other, bad.. The solution is to keep the url as button but ignore the pinterest script. see stackoverflow.com...