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What is the logic behind the “using” keyword in C++?
...lement, too confusing, or would contradict old code.
Here is an old paper from 2003 n1449. The rationale seems to be related to templates. Warning: there may be typos due to copying over from PDF.
First let’s consider a toy example:
template <typename T>
class MyAlloc {/*...*/};
template ...
Different ways of adding to Dictionary
...yDietFavorites[1] = "Salad";
But don't forget you're the programmer, and from now on you finishes your sentences with ; you refuse to use emojis because they would throw compilation error and all list of favorites is 0 index based.
Your diet changed too! So you alter your list again:
/*you don't...
Simple and fast method to compare images for similarity
... contribute an img_hash module to opencv_contrib, you can find the details from this link.
img_hash module provide six image hash algorithms, quite easy to use.
Codes example
origin lena
blur lena
resize lena
shift lena
#include <opencv2/core.hpp>
#include <opencv2/core/ocl.hpp>
...
Any way to Invoke a private method?
...dMethod will only find method declared in the current Class, not inherited from supertypes. So, traverse up the concrete class hierarchy if necessary. Second, a SecurityManager can prevent use of the setAccessible method. So, it may need to run as a PrivilegedAction (using AccessController or Subjec...
Is there any way to put malicious code into a regular expression?
...uby, ...) talks about ways that most modern NFAs, which all seem to derive from Henry Spencer’s code, suffer severe performance degradation, but where a Thompson‐style NFA has no such problems.
If you only admit patterns that can be solved by DFAs, you can compile them up as such, and they will...
What is the meaning of the planned “private protected” C# access modifier?
...heritance) and that, perhaps, internal should be its own modifier separate from public/protected/private.
– jpmc26
Apr 4 '14 at 19:10
...
How to write a cron that will run a script every day at midnight?
...
from the man page
linux$ man -S 5 crontab
cron(8) examines cron entries once every minute.
The time and date fields are:
field allowed values
----- --------------
minu...
Loop through an array of strings in Bash?
...VS variables or files in to a list. Changing the internal field separator from a space, to what ever you want. In the example below it is changed to a comma
List="Item 1,Item 2,Item 3"
Backup_of_internal_field_separator=$IFS
IFS=,
for item in $List;
do
echo $item
done
IFS=$Backup_of_int...
How large should my recv buffer be when calling recv in the socket library
...looping around if you don't have a complete message and stuffing the bytes from the next recv into the buffer following the partial message. You shouldn't use strstr() on the raw buffer filled by recv() - there's no guarantee that it contains a nul-terminator, so it might cause strstr() to crash.
...
In PHP what does it mean by a function being binary-safe?
...e built-in PHP function strlen() is a binary-safe function? I'm confirming from you because on the PHP Manual page for the function strlen() it's not been mentioned that whether it's a binary-safe function or a non-binary safe function. This only missing thing from the PHP Manual is creating the con...