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“X does not name a type” error in C++
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When the compiler compiles the class User and gets to the MyMessageBox line, MyMessageBox has not yet been defined. The compiler has no idea MyMessageBox exists, so cannot understand the meaning of your class member.
You need to make sure MyMessageBox is defined before you use it as a member....
How to remove a single, specific object from a ConcurrentBag?
... own queue becomes empty. If you remove an item and put it back then the next item you remove may be the same item again. There is no guarantee that repeatedly removing items and putting them back will allow you to iterate over the all the items.
Two alternatives for you:
Remove all items and rem...
How to unzip a file using the command line? [closed]
... The first URL listed is a true 16-bit application, thus does not work on x64 operating systems. Just a heads up.
– Mark Henderson
Sep 11 '13 at 4:42
40
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Java's Interface and Haskell's type class: differences and similarities?
...a ways to fake this by making an interface with generic parameter that is expected to be the same type as the object itself, like how Comparable<T> does it, where you are expected to use Foo implements Comparable<Foo> so that the compareTo(T otherobject) kind of has type t -> t -> ...
Delete all Duplicate Rows except for One in MySQL? [duplicate]
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Excellent solution. It worked perfectly. But I have one suggestion here we should swap the conditions. Instead of [WHERE n1.id > n2.id AND n1.name = n2.name] we should write [WHERE n1.name = n2.name AND n1.id > n2.id] it...
How do you round UP a number in Python?
...t that many functions ask questions about the type of some parameters and execute different code depending on the answer.
– quamrana
Dec 17 '17 at 12:27
13
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How do I determine if my python shell is executing in 32bit or 64bit?
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One way is to look at sys.maxsize as documented here:
$ python-32 -c 'import sys;print("%x" % sys.maxsize, sys.maxsize > 2**32)'
('7fffffff', False)
$ python-64 -c 'import sys;print("%x" % sys.maxsize, sys.maxsize > 2**32)'
('7fffffffffffffff', T...
UnicodeDecodeError: 'charmap' codec can't decode byte X in position Y: character maps to
I'm trying to get a Python 3 program to do some manipulations with a text file filled with information. However, when trying to read the file I get the following error:
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How do I bind a WPF DataGrid to a variable number of columns?
...ove)
{
dataGrid.Columns.Move(ne.OldStartingIndex, ne.NewStartingIndex);
}
else if (ne.Action == NotifyCollectionChangedAction.Remove)
{
foreach (DataGridColumn column in ne.OldItems)
{
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Go Unpacking Array As Arguments
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You can use a vararg syntax similar to C:
package main
import "fmt"
func my_func( args ...int) int {
sum := 0
for _,v := range args {
sum = sum + v
}
return sum;
}
func main() {
arr := []int{2,4}
sum := my_func(arr...)
...