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Difference in make_shared and normal shared_ptr in C++
...): This is not a problem since C++17, due to the changes in the evaluation order of function arguments. Specifically, each argument to a function is required to fully execute before evaluation of other arguments.
Since the OP seem to be wondering about the exception-safety side of things, I've upda...
How can I see the raw SQL queries Django is running?
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See the docs FAQ: "How can I see the raw SQL queries Django is running?"
django.db.connection.queries contains a list of the SQL queries:
from django.db import connection
print(connection.queries)
Querysets also have a query attribute containing the query to...
Why should I use a pointer rather than the object itself?
...y, you shouldn't abuse it. So here are some disadvantages in no particular order:
It is error-prone. Manual memory allocation is dangerous and you are prone to leaks. If you are not proficient at using the debugger or valgrind (a memory leak tool), you may pull your hair out of your head. Luckily ...
How do I stop a web page from scrolling to the top when a link is clicked that triggers JavaScript?
...an ID exactly equal to decoded fragid, then the first such element in tree order is the indicated part of the document; stop the algorithm here.
No decoded fragid: If there is an a element in the DOM that has a name attribute whose value is exactly equal to fragid (not decoded fragid), then the fir...
What C++ Smart Pointer Implementations are available?
...ion of the object if the std::shared_ptr reference count drops to zero. In order to get access to the raw pointer you'll first need to access the std::shared_ptr by calling lock which will return an empty std::shared_ptr if the owned pointer has expired and been destroyed already. This is primarily ...
RAW POST using cURL in PHP
How can I do a RAW POST in PHP using cURL?
2 Answers
2
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Instance attribute attribute_name defined outside __init__
...ach child class may override, and in this function use function setattr in order to define the class-unique instance variables. May be this is not too aesthetic as well, but it eliminates the here-discussed linting warning.
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Unique Key constraints for multiple columns in Entity Framework
...et; }
The second parameter in the attribute is where you can specify the order of the columns in the index.
More information: MSDN
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MySQL load NULL values from CSV data
...ummarize the answer and previous comment. Following worked for me, in the order: sed -i 's/,,/,\N/g' $file, sed -i 's/,,/,/g' $file, sed -i 's/\N,$/\N/g' $file,
– Omar Khazamov
Dec 3 '16 at 23:43
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Do I cast the result of malloc?
...chael Anderson () issue aside, note that your suggested style switched the order., Consider when element count is computed like length*width, keeping the sizeof first in this case insures multiplication is done with at least size_t math. Compare malloc(sizeof( *ptr) * length * width) vs. malloc(l...