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How can I multiply and divide using only bit shifting and adding?
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To multiply in terms of adding and shifting you want to decompose one of the numbers by powers of two, like so:
21 * 5 = 10101_2 * 101_2 (Initial step)
= 10101_2 * (1 * 2^2 + 0 * 2^1 + 1 * 2^0)
= 10101_2 * 2^2 + 10101_2 * 2^0
= 10101_2 << 2 + 101...
Shuffle an array with python, randomize array item order with python
...arlie That would be a good thing to ask in a separate question. (Maybe someone else has already asked it.)
– David Z
Mar 29 '17 at 18:17
13
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What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?
...rence between LinearLayout, RelativeLayout, and AbsoluteLayout.
Could someone please tell me the exact differences between them?
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EF Code First “Invalid column name 'Discriminator'” but no inheritance
...othing special about it. I have many tables in my database similar to that one, but for some reason, this table ended up with a "Discriminator" column on the EF Proxy Class.
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How to check for valid email address? [duplicate]
...ed their street address) is usually enough. Something like: it has exactly one @ sign, and at least one . in the part after the @:
[^@]+@[^@]+\.[^@]+
You'd probably also want to disallow whitespace -- there are probably valid email addresses with whitespace in them, but I've never seen one, so th...
support FragmentPagerAdapter holds reference to old fragments
...y loading of its pages; by default it only loads the current page, and the one to the left and right.
If you put your app into the background, the fragments that have been added to the fragment manager are saved automatically. Even if your app is killed, this information is restored when you relaun...
In what cases do I use malloc and/or new?
...careful though this is not correct:
//This is incorrect - may delete only one element, may corrupt the heap, or worse...
delete pBuffer;
Instead you should do this when deleting an array of data:
//This deletes all items in the array
delete[] pBuffer;
The new keyword is the C++ way of doing it...
When writing a directive in AngularJS, how do I decide if I need no new scope, a new child scope, or
I'm looking for some guidelines that one can use to help determine which type of scope to use when writing a new directive. Ideally, I'd like something similar to a flowchart that walks me through a bunch of questions and out pops the correct answer – no new new scope, new child scope, or new isol...
AutoMapper vs ValueInjecter [closed]
... the Id suffix and it's type is inherited from Entity, stuff like that
so one obvious difference, ValueInjecter is used even in windows forms with flattening and unflattening, that's how flexible it is
(mapping from object to form controls and back)
Automapper, not usable in windows forms, no unf...
Parsing Visual Studio Solution files
... in .NET?
I would like to write an app that merges multiple solutions into one while saving the relative build order.
11 An...