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How do I get bit-by-bit data from an integer value in C?
... for more bits (up to 32 for an integer).
std::vector <bool> bits_from_int (int integer) // discern which bits of PLC codes are true
{
std::vector <bool> bool_bits;
// continously divide the integer by 2, if there is no remainder, the bit is 1, else it's 0
for (int i =...
How can I String.Format a TimeSpan object with a custom format in .NET?
...self must be escaped unless you're using a verbatim string).
This excerpt from the MSDN Custom TimeSpan Format Strings page explains about escaping the ":" and "." characters in a format string:
The custom TimeSpan format specifiers do not include placeholder separator symbols, such as the symb...
How do I get user IP address in django?
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From the django docs "relying on REMOTE_ADDR or similar values is widely known to be a worst practice" (djangoproject.com/weblog/2009/jul/28/security/#secondary-issue)
– Zags
May 7 '15 a...
How can I determine whether a 2D Point is within a Polygon?
...ay casting. The idea of the algorithm is pretty simple: Draw a virtual ray from anywhere outside the polygon to your point and count how often it hits a side of the polygon. If the number of hits is even, it's outside of the polygon, if it's odd, it's inside.
The winding number algorithm would be...
how to mysqldump remote db from local machine
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How about being in a VPN? Or doing a dump from a machine you SSHed into that has access to the database machine? The port does not need to be public.
– Ondrej Burkert
Sep 5 '18 at 20:07
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How to pass the values from one activity to previous activity
How do I pass a value from one screen to its previous screen?
6 Answers
6
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Using {} in a case statement. Why?
...ed in the C++ draft standard section 6.1 Labeled statement) and we can see from section 6.7 paragraph 3 that jumping pass a declaration is not allowed in many cases, including those with an initialization:
It is possible to transfer into a block, but not in a way that bypasses declarations with ...
Sending a message to nil in Objective-C
...e to nil " means - let alone how it is actually useful. Taking an excerpt from the documentation:
11 Answers
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How can I convert the “arguments” object to an array in JavaScript?
...t's really something else entirely , it doesn't have the useful functions from Array.prototype like forEach , sort , filter , and map .
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How to construct a std::string from a std::vector?
...string, is there a quicker/alternative/"better" way to initialize a string from a vector of chars?
7 Answers
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