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Which rows are returned when using LIMIT with OFFSET in MySQL?
...18 records, begin with record 9 (OFFSET 8)
you would get the same result form
SELECT column FROM table LIMIT 8, 18
visual representation (R is one record in the table in some order)
OFFSET LIMIT rest of the table
__||__ _______||_______ __||__
/ \ / \ ...
Which method performs better: .Any() vs .Count() > 0?
...e GetEnumerator()/MoveNext()/Dispose() sequence required by Any() to check for a non-empty IEnumerable<T> sequence.
For just IEnumerable<T>, then Any() will generally be quicker, as it only has to look at one iteration. However, note that the LINQ-to-Objects implementation of Count() do...
How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
Tools such as MRTG provide network throughput / bandwidth graphs for the current network utilisation on specific interfaces, such as eth0. How can I return that information at the command line on Linux/UNIX?
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How to divide flask app into multiple py files?
...ules, see the Flask docs.
However,
Flask uses a concept of blueprints for making application components and supporting common patterns within an application or across applications.
You can create a sub-component of your app as a Blueprint in a separate file:
simple_page = Blueprint('simple_p...
How do i find out what all symbols are exported from a shared object?
...These are all different things, and your question conflates them all :-(
For an AIX shared object, use dump -Tv /path/to/foo.o.
For an ELF shared library, use readelf -Ws /path/to/libfoo.so, or (if you have GNU nm) nm -D /path/to/libfoo.so.
For a non-ELF UNIX shared library, please state which UNI...
Class method differences in Python: bound, unbound and static
...type (the class of a class, cf. this question) to not create bound methods for method_two.
Now, you can invoke static method both on an instance or on the class directly:
>>> a_test = Test()
>>> a_test.method_one()
Called method_one
>>> a_test.method_two()
Called method_...
What does it mean if a Python object is “subscriptable” or not?
... to mathematical notation that uses actual subscripts; e.g. a[1] is Python for what mathematicians would write as a₁. So "subscriptable" means "able to be subscripted". Which, in Python terms, means it has to implement __getitem__(), since a[1] is just syntactic sugar for a.__getitem__(1).
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How to perform OR condition in django queryset?
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Is it better to use this type of query or perform two separate queries?
– MHB
Mar 16 at 15:06
...
How to automatically generate N “distinct” colors?
...ike so:
// assumes hue [0, 360), saturation [0, 100), lightness [0, 100)
for(i = 0; i < 360; i += 360 / num_colors) {
HSLColor c;
c.hue = i;
c.saturation = 90 + randf() * 10;
c.lightness = 50 + randf() * 10;
addColor(c);
}
...
Swift Beta performance: sorting arrays
I was implementing an algorithm in Swift Beta and noticed that the performance was very poor. After digging deeper I realized that one of the bottlenecks was something as simple as sorting arrays. The relevant part is here:
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