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How to declare a variable in MySQL?
...of string.
SELECT @var_any_var_name
You can initialize a variable using SET or SELECT statement:
SET @start = 1, @finish = 10;
or
SELECT @start := 1, @finish := 10;
SELECT * FROM places WHERE place BETWEEN @start AND @finish;
User variables can be assigned a value from a limited set o...
PyPy — How can it possibly beat CPython?
... PyPy interpreter is implemented in RPython which is a statically typed subset of Python (the language and not the CPython interpreter). - Refer https://pypy.readthedocs.org/en/latest/architecture.html for details.
Q3. And what are the chances of a PyPyPy or PyPyPyPy beating their score?
That woul...
Difference between Static and final?
...n static blocks. When using static variables it is sometimes necessary to set these variables up before using the class, but unfortunately you do not get a constructor. This is where the static keyword comes in.
public class MyClass {
public static List<String> cars = new ArrayList<...
Finding duplicate values in MySQL
...hat don't understand how HAVING works - it's simply a filter on the result set, so happens after the main query.
– John Hunt
Jun 22 '17 at 10:02
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How to make an introduction page with Doxygen
...AINPAGE. So make sure to add your index file, e.g. README.md, to INPUT and set it as this option's value:
INPUT += README.md
USE_MDFILE_AS_MAINPAGE = README.md
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...
TransformXml task could not be loaded from Microsoft.Web.Publishing.Tasks.dll
...Web\Microsoft.Web.Publishing.targets" />
Reload the project
That will set the correct version of Visual Studio dynamically and properly.
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fo...
Why are arrays of references illegal?
...y of references to do, with perfectly legal C++.
Except (a) it's a pain to set up for more than 3 or 4 elements, and (b) it's doing a calculation using a bunch of ?: which could be done using indexing (not with normal C-pointer-calculation-semantics indexing, but indexing nonetheless). I'd like to s...
How to get client's IP address using JavaScript?
...
"time_zone": {
"name": "Asia/Singapore",
"abbr": "+08",
"offset": "+0800",
"is_dst": false,
"current_time": "2018-05-09T12:28:49.183674+08:00"
},
"threat": {
"is_tor": false,
"is_proxy": false,
"is_anonymous": false,
"is_known_attacker": false,
"is_know...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
... 27
# name one
Both idioms can be mixed with normal arguments to allow a set of fixed and some variable arguments:
def foo(kind, *args, **kwargs):
pass
It is also possible to use this the other way around:
def foo(a, b, c):
print(a, b, c)
obj = {'b':10, 'c':'lee'}
foo(100,**obj)
# 100...
Build an ASCII chart of the most commonly used words in a given text [closed]
...
Transact SQL set based solution (SQL Server 2005) 1063 892 873 853 827 820 783 683 647 644 630 characters
Thanks to Gabe for some useful suggestions to reduce the character count.
NB: Line breaks added to avoid scrollbars only the last ...