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Qt c++ aggregate 'std::stringstream ss' has incomplete type and cannot be defined
...er ways to convert int to string, like
char numstr[21]; // enough to hold all numbers up to 64-bits
sprintf(numstr, "%d", age);
result = name + numstr;
check this!
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How to get the separate digits of an int number?
... and toCharArray took 20ms and split took 1021ms. I also did it mathematically using divide by ten with mod (%) and it took 50ms doing it that way, so toCharArray appears to be faster than the other two.
– Jerry Destremps
Dec 15 '13 at 13:21
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What is IP address '::1'?
...
Xaqron, maybe a firewall is blocking v4 but not v6 traffic?
– SilverbackNet
Jan 6 '11 at 3:25
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MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?
...make queries faster,
don't do a SELECT * only select
the fields that you really need.
Make sure you have an index on relevant_field to speed up the equi-join.
Make sure to group by on the primary key.
If you are on InnoDB and you only select indexed fields (and things are not too complex) than MyS...
Get number of digits with JavaScript
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length is a property, not a method. You can't call it, hence you don't need parenthesis ():
function getlength(number) {
return number.toString().length;
}
UPDATE: As discussed in the comments, the above example won't work for float numbers. To make it working we c...
Case Insensitive Flask-SQLAlchemy Query
...ties(models.User.username).\
filter(models.User.username.ilike("%ganye%")).all()
The above example is very useful in case one needs to use Flask's jsonify for AJAX purposes and then in your javascript access it using data.result:
from flask import jsonify
jsonify(result=user)
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How can I read inputs as numbers?
...input function.
Python 2.x
There were two functions to get user input, called input and raw_input. The difference between them is, raw_input doesn't evaluate the data and returns as it is, in string form. But, input will evaluate whatever you entered and the result of evaluation will be returned....
Linux command (like cat) to read a specified quantity of characters
...tes=[-]N
print the first N bytes of each file; with the leading '-', print all but the last N bytes of each file
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How do I check that a number is float or integer?
...00% incorrect. The values null, empty string, 1.0 and numerous others will all register incorrectly as integers (even with the === check).
– whoblitz
Sep 11 '13 at 2:59
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What is the meaning of the term “free function” in C++?
...hat free functions also don't take any arguments. But I am not sure. These all are my assumptions. So could anybody define free function?
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