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Difference between onCreate() and onStart()? [duplicate]
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Take a look on life cycle of Activity
Where
***onCreate()***
Called when the activity is first created. This is where you should do all of your normal static set up: create views, bind data to lists, etc. This method also provides you with a Bundle containing the activity's previously ...
由“Pure Virtual Function Called” 考虑到的 - C/C++ - 清泛网 - 专注C/C++及内核技术
由“Pure Virtual Function Called” 考虑到的1 派生类对象析构时，基类析构函数执行的前期会修改对象的虚函数表指针值 一般情况下（特指基类不使用novtable属性），debug编译出 1. 派生类对象析构时，基类析构函数执行的前期...
Garbage collector in Android
I have seen many Android answers that suggest calling the garbage collector in some situations.
11 Answers
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parseInt(null, 24) === 23… wait, what?
...From 15.1.2.2 parseInt (string , radix):
When the parseInt function is called,
the following steps are taken:
Let inputString be ToString(string).
Let S be a newly created substring of inputString consisting of the first
character that is not a
StrWhiteSpaceChar and all character...
Mockito - difference between doReturn() and when()
...urn() has the big disadvantage of turning into YODA style coding of method calls. The thing later comes written down first that is. Most people read left to right; so you now have to constantly remember to reverse the return-when logic in your head.
– GhostCat
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How do you know when to use fold-left and when to use fold-right?
... (foldl and foldr take an external initial value), and Haskell's "cons" is called (:) not (::), but otherwise this is correct. You may want to add that Haskell additionally provides a foldl'/foldl1' which are strict variants of foldl/foldl1, because lazy arithmetic is not always desirable.
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Elastic search, multiple indexes vs one index and types for different data sets?
...our hardware.
If you are asking what is too much data vs small data? Typically it depends on the processor speed and the RAM of your hardware, the amount of data you store within each variable in your mapping for Elasticsearch and your query requirements; using many facets in your queries is going...
How do I find Waldo with Mathematica?
..., ZIP code readers, and strokeless handwriting recognition work today. Basically you know the answer is there, you know more or less what it should look like, and everything else may have common elements, but is definitely "not it", so you don't bother with the "not it"s, you just look of the likeli...
What is the difference between bottom-up and top-down?
...your tree of subproblems), and subproblems (subtrees). The subproblems typically repeat and overlap.
For example, consider your favorite example of Fibonnaci. This is the full tree of subproblems, if we did a naive recursive call:
TOP of the tree
fib(4)
fib(3)...................... + fib(2)
fib...
jQuery set checkbox checked
I already tried all the possible ways, but I still didn't get it working.
I have a modal window with a checkbox I want that when the modal opens, the checkbox check or uncheck should be based on a database value. (I have that already working with others form fields.) I started trying to get it c...