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Copy constructor for a class with unique_ptr
... return *this,
}
If you want to use your class in a std::vector, you basically have to decide if the vector shall be the unique owner of an object, in which case it would be sufficient to make the class moveable, but not copyable. If you leave out the copy-ctor and copy-assignment, the compiler wi...
Default text which won't be shown in drop-down list
...solution worked perfectly fine for me so I made my research in order to avoid any Js and CSS, but just sticking with HTML.
Adding a value of selected to the item we want to appear as a header forces it to show in the first place as a placeholder.
Something like:
<option selected disabled>Cho...
What is the proper way to test if a parameter is empty in a batch file?
...istinguish between an empty %1 and one with "".
It uses the ability of the CALL command to fail without aborting the batch file.
@echo off
setlocal EnableDelayedExpansion
set "arg1="
call set "arg1=%%1"
if defined arg1 goto :arg_exists
set "arg1=#"
call set "arg1=%%1"
if "!arg1!" EQU "#" (
ec...
How to get JavaScript caller function line number? How to get JavaScript caller source URL?
I am using the following for getting the JavaScript caller function name:
15 Answers
1...
Convert java.util.Date to String
...aradox - It's stupid, but that doesn't make it pointless. I've been specifically asked to use it because it matches what people expect on reports. (I'd prefer yyyy-MM-dd everywhere, but what can you do?).
– Autumn Leonard
Oct 22 '15 at 21:00
...
Why does “return list.sort()” return None, not the list?
...h of the methods. The
second form makes it clear that each of these calls acts on the same
object, and so even if you don't know the class and its methods very
well, you can understand that the second and third call are applied to
x (and that all calls are made for their sid...
Mock functions in Go
I'm puzzled with dependencies. I want to be able to replace some function calls with mock ones. Here's a snippet of my code:
...
How to estimate how much memory a Pandas' DataFrame will need?
...n how many bytes each column occupies:
>>> df.memory_usage()
Row_ID 20906600
Household_ID 20906600
Vehicle 20906600
Calendar_Year 20906600
Model_Year 20906600
...
To include indexes, pass index=True.
So to get overall memory consumption:
>>> d...
Easy way to dismiss keyboard?
... actually guaranteed to work, or is just a non-guaranteed side effect from calling an API in a way that it's not documented to work.
– JosephH
Sep 14 '10 at 4:28
3
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How to scale threads according to CPU cores?
...te it just like you would create any other object. So, let's say that you call the above method and find that it returns 2 processors. Awesome. Now, you can create a loop that generates a new Thread, and splits the work off for that thread, and fires off the thread. Here's some psuedocode to dem...