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SQL SELECT speed int vs varchar
...context or experimental results - doesn't really answer the question. Everyone knows that varchars are allowed to take much more space than ints, but they do NOT have to.
– Marcin Wojnarski
Apr 5 '19 at 12:08
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DropDownList's SelectedIndexChanged event not firing
...s above.
There might be some situation where in, the "value" of more than one items in the dropdown list is duplicated/same. So, make sure that you have no repeated values in the list items to trigger this "onselectedindexchanged" event
...
powershell - extract file name and extension
... work if there is no periods in the filename.
– Halfdone
Mar 16 '18 at 15:12
2
you can change to ...
Xcode 4 and Core Data: How to enable SQL Debugging
...ar as the simulator goes, the format of my arguments was wrong as I see in one of the answers here stackoverflow.com/questions/822906/… I need to pass an argument of -com.apple.CoreData.SQLDebug and a second argument of 1 in order to see the SQL output.
– oalders
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How to right align widget in horizontal linear layout Android?
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This works! But anyone can explain why? I couldn't totally understand.
– GMsoF
Jul 9 '13 at 9:00
29
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How to pass objects to functions in C++?
... as a std::optional (boost::optional for older std libs), and aliasing is done fine by reference.
C++11's move semantics make passing and returning by value much more attractive even for complex objects.
Rules of thumb for C++03:
Pass arguments by const reference, except when
they are to be change...
no new variables on left side of :=
...hey are semantically equivalent (with respect to assignment) but the first one is also a "short variable declaration" ( http://golang.org/ref/spec#Short_variable_declarations ) which means that in the left we need to have at least a new variable declaration for it to be correct.
You can change the ...
Hidden features of C
... must be a hidden feature, because people are constantly redefining them. One code base I've worked on (and still do, for now) has multiple redefinitions, all with different identifiers. Most of the time it's with preprocessor macros:
#define INT16 short
#define INT32 long
And so on. It makes...
Best implementation for hashCode method for a collection
...unique :) Is a hashcode. However I got the idea: the prime number has only one multiplier, while non-prime has at least two. That creates an extra combination for multiplication operator to result the same hash, i.e. cause collision.
– dma_k
Feb 15 '13 at 14:08...
Use 'import module' or 'from module import'?
...n import module and from module import foo is mainly subjective. Pick the one you like best and be consistent in your use of it. Here are some points to help you decide.
import module
Pros:
Less maintenance of your import statements. Don't need to add any additional imports to start using ano...