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Avoiding instanceof in Java
...ng a chain of "instanceof" operations is considered a "code smell". The standard answer is "use polymorphism". How would I do it in this case?
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Is there a standard naming convention for git tags? [closed]
... code. Using this system allows automated tools to inspect your
package and determine SemVer compliance and released versions.
When tagging releases in a version control system, the tag for a version MUST be
"vX.Y.Z" e.g. "v3.1.0".
However, after discussion this was removed, and i...
Efficient way to rotate a list in python
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A collections.deque is optimized for pulling and pushing on both ends. They even have a dedicated rotate() method.
from collections import deque
items = deque([1, 2])
items.append(3) # deque == [1, 2, 3]
items.rotate(1) # The deque is now: [3, 1, 2]
item...
Only initializers, entity members, and entity navigation properties are supported
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Entity is trying to convert your Paid property to SQL and can't because it's not part of the table schema.
What you can do is let Entity query the table with no Paid filter and then filter out the not Paid ones.
public ActionResult Index()
{
var debts = storeDB.Orders
...
How to create a static library with g++?
Can someone please tell me how to create a static library from a .cpp and a .hpp file? Do I need to create the .o and the .a? I would also like to know how can I compile a static library in and use it in other .cpp code. I have header.cpp , header.hpp . I would like to create header.a . Test the...
How do you check if a JavaScript Object is a DOM Object?
...function isElement(obj) {
try {
//Using W3 DOM2 (works for FF, Opera and Chrome)
return obj instanceof HTMLElement;
}
catch(e){
//Browsers not supporting W3 DOM2 don't have HTMLElement and
//an exception is thrown and we end up here. Testing some
//properties that all eleme...
Append an object to a list in R in amortized constant time, O(1)?
...oldlist, list(someobj))
In general, R types can make it hard to have one and just one idiom for all types and uses.
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What is the difference between MacVim and regular Vim?
...the terminal. Can anyone tell me what differences there are between MacVim and regular Vim?
4 Answers
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Retrieve filename from file descriptor in C
...Linux can track renames in some cases). To verify, stat the filename given and fstat the fd you have, and make sure st_dev and st_ino are the same.
Of course, not all file descriptors refer to files, and for those you'll see some odd text strings, such as pipe:[1538488]. Since all of the real filen...
How to exclude a directory in find . command
I'm trying to run a find command for all JavaScript files, but how do I exclude a specific directory?
38 Answers
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