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How do I write a short literal in C++?
.... I would guess that the compiler would be smart enough to compile this as if it's a short literal (i.e. it wouldn't actually allocate an int and then cast it every time).
The following illustrates how much you should worry about this:
a = 2L;
b = 2.0;
c = (short)2;
d = '\2';
Compile -> disa...
Does Java have a complete enum for HTTP response codes?
I'm wondering if there is an enum type in some standard Java class library that defines symbolic constants for all of the valid HTTP response codes. It should support conversion to/from the corresponding integer values.
...
What is the difference between ArrayList.clear() and ArrayList.removeAll()?
...ection):
public boolean removeAll(Collection<?> c) {
boolean modified = false;
Iterator<?> e = iterator();
while (e.hasNext()) {
if (c.contains(e.next())) {
e.remove();
modified = true;
}
}
return modified;
}
clear() is much ...
ImportError: DLL load failed: %1 is not a valid Win32 application. But the DLL's are there
...
Please check if the python version you are using is also 64 bit. If not then that could be the issue. You would be using a 32 bit python version and would have installed a 64 bit binaries for the OPENCV library.
...
How do I use cascade delete with SQL Server?
...raint_object_id
AND t.OBJECT_ID = fc.referenced_object_id
ORDER BY 1
And if you ever find that you can't DROP a particular table due to a Foreign Key constraint, but you can't work out which FK is causing the problem, then you can run this command:
sp_help 'TableName'
The SQL in that article li...
Xcode variables
...o use in some situations, such as a run script build phase. I am wondering if it's possible to get the build type (i.e., Release or Debug ). Any ideas?
...
Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
...
Please see my answer if you want to get only one count column per group.
– Pedro M Duarte
Sep 26 '15 at 19:43
...
What does it mean for a data structure to be “intrusive”?
...sive data structure would be an ordered list of elements that are mutable. If the element changes, the list needs to be reordered, so the list object has to intrude on the privacy of the elements in order to get their cooperation. ie. the element has to know about the list it is in, and inform it of...
Convert Go map to json
...
If you had caught the error, you would have seen this:
jsonString, err := json.Marshal(datas)
fmt.Println(err)
// [] json: unsupported type: map[int]main.Foo
The thing is you cannot use integers as keys in JSON; it is for...
How to effectively work with multiple files in Vim
...h> you can add a new tab; and with a regular :q or :wq you close a tab.
If you map :tabn and :tabp to your F7/F8 keys you can easily switch between files.
If there are not that many files or you don't have Vim 7 you can also split your screen in multiple files: :sp <filepath>. Then you can...