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AI2 Media Notification
...ta from an UrsMediaHelper component added. The directories returned by GetAppDataDir & GetDownloadDir close with "/". 1.2 (2021-09-12) If the extension is used in several apps, tapping an action button triggers the associated event in all apps at the same time. This is...
Oracle Differences between NVL and Coalesce
... LENGTH(RAWTOHEX(SYS_GUID()))) AS val
FROM dual
CONNECT BY
level <= 10000
)
This runs for almost 0.5 seconds, since it generates SYS_GUID()'s, despite 1 being not a NULL.
SELECT SUM(val)
FROM (
SELECT COALESCE(1, LENGTH(RAWTOHEX(SYS_GUID(...
How to compare 2 files fast using .NET?
...l approaches recommend reading the binary via FileStream and comparing it byte-by-byte.
18 Answers
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What is the use of “ref” for reference-type variables in C#?
...C#. It details clearly the exact behaviour and usage of passing parameters by value, by reference (ref), and by output (out).
Here's an important quote from that page in relation to ref parameters:
Reference parameters don't pass the
values of the variables used in the
function member invoc...
How to set a Fragment tag by code?
...Fragment class. The only way to set a Fragment tag that I have found is by doing a FragmentTransaction and passing a tag name as parameter.
...
Descending order by date filter in AngularJs
...
According to documentation you can use the reverse argument.
filter:orderBy(array, expression[, reverse]);
Change your filter to:
orderBy: 'created_at':true
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...
How should I read a file line-by-line in Python?
...e.txt') as fp:
for line in fp:
print line
We are all spoiled by CPython's relatively deterministic reference-counting scheme for garbage collection. Other, hypothetical implementations of Python will not necessarily close the file "quickly enough" without the with block if they use so...
What is a plain English explanation of “Big O” notation?
...(2n) becomes insignificant (accounting for 0.0002% of the total operations by that stage).
One can notice that we've assumed the worst case scenario here. While multiplying 6 digit numbers, if one of them has 4 digits and the other one has 6 digits, then we only have 24 multiplications. Still, we ca...
smart pointers (boost) explained
...object after it goes out of scope.
Share of ownership can be implemented by having a copy constructor. This naturally copies a smart pointer and both the copy and the original will reference the same object. Transfer of ownership cannot really be implemented in C++ currently, because there are no ...
What techniques can be used to speed up C++ compilation times?
...standard headers don't have a respective declarations header.
Prefer pass-by-reference to pass-by-value in function signatures. This will eliminate the need to #include the respective type definitions in the header file and you will only need to forward-declare the type. Of course, prefer const ref...