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What is the most efficient string concatenation method in python?
... Guido. Although it is worth remembering also that this is an old article and it predates the existence of things like ''.join (although I guess string.joinfields is more-or-less the same)
On the strength of that, the array module may be fastest if you can shoehorn your problem into it. But ''.jo...
Does JavaScript have “Short-circuit” evaluation?
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So short circuit it is the standard in JS?
– GibboK
Sep 23 '12 at 17:42
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Oracle PL/SQL - How to create a simple array variable?
...create in-memory arrays.
With either of these you need to both initialise and extend the collection before adding elements:
declare
type array_t is varray(3) of varchar2(10);
array array_t := array_t(); -- Initialise it
begin
for i in 1..3 loop
array.extend(); -- Extend it
arr...
Real life example, when to use OUTER / CROSS APPLY in SQL
I have been looking at CROSS / OUTER APPLY with a colleague and we're struggling to find real life examples of where to use them.
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ipython notebook clear cell output in code
In a iPython notebook, I have a while loop that listens to a Serial port and print the received data in real time.
3 Answ...
Javascript sort array by two fields
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Nice and clean! The only thing it only works for numbers.
– Afanasii Kurakin
Jul 24 '19 at 7:40
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Spring Boot - parent pom when you already have a parent pom
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You can use the spring-boot-starter-parent like a "bom" (c.f. Spring and Jersey other projects that support this feature now), and include it only in the dependency management section with scope=import.That way you get a lot of the benefits of using it (i.e. dependency management) without repl...
CALayer with transparent hole in it
I have a simple view (left side of the picture) and i need to create some kind of overlay (right side of the picture) to this view. This overlay should have some opacity, so the view bellow it is still partly visible.
Most importantly this overlay should have a circular hole in the middle of it so i...
Datatable vs Dataset
...able objects, you can return multiple distinct sets of data into a single, and therefore more manageable, object.
Performance-wise, you're more likely to get inefficiency from unoptimized queries than from the "wrong" choice of .NET construct. At least, that's been my experience.
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How to change a module variable from another module?
Suppose I have a package named bar , and it contains bar.py :
3 Answers
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