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What database does Google use?
... designed to scale to a very
large size: petabytes of data across
thousands of commodity servers.
Many projects at Google store data in
Bigtable, including web indexing,
Google Earth, and Google Finance.
These applications place very
different demands on Bigtable, both in
terms of...
Kotlin secondary constructor
...defined in a companion object
Sometimes you want your constructor private and only a factory method available to clients. For now this is only possible with a factory method defined in a companion object:
class C private (s: Int) {
companion object {
fun new(s: String) = C(s.length)
...
How and where are Annotations used in Java?
...n be used to describe other meta-objects. Meta-objects are classes, fields and methods. Asking an object for its meta-object (e.g. anObj.getClass() ) is called introspection. The introspection can go further and we can ask a meta-object what are its annotations (e.g. aClass.getAnnotations). Introspe...
How do you turn off auto-capitalisation in HTML form fields in iOS?
...
@AbhiBeckert Can confirm. 2014 and we can hardly remember iOS 6.
– Henry Harris
Jun 18 '14 at 21:06
24
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How to solve the error LNK2019: unresolved external symbol - function?
...to your problem is that when building your UnitTest1 project, the compiler and linker have no idea that function.cpp exists, and also have nothing to link that contains a definition of multiple. A way to fix this is making use of linking libraries.
Since your unit tests are in a different project,...
C# - How to get Program Files (x86) on Windows 64 bit
...
Yes. It will return c:\program files on x86 and c:\program files (x86) on 64-bit windows.
– Nathan
Mar 1 '11 at 20:33
2
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Reason to Pass a Pointer by Reference in C++?
...hat the user of that class could get a pointer to the internal data buffer and read/write to it, but it cannot – for example – free that buffer using delete or rebind that pointer to some other place in memory? Or did I get it wrong?
– BarbaraKwarc
Aug 4 '1...
SELECT * WHERE NOT EXISTS
...eeID = e.id
)
You can join these tables with a LEFT JOIN keyword and filter out the NULL's, but this will likely be less efficient than using NOT EXISTS.
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In Visual Studio C++, what are the memory allocation representations?
In Visual Studio, we've all had "baadf00d", have seen seen "CC" and "CD" when inspecting variables in the debugger in C++ during run-time.
...
Convert numpy array to tuple
...turn tuple(totuple(i) for i in a)
except TypeError:
return a
And an example:
>>> array = numpy.array(((2,2),(2,-2)))
>>> totuple(array)
((2, 2), (2, -2))
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