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T-SQL stored procedure that accepts multiple Id values
...sing the List as Many Parameters. Tedious and error prone, but simple.
Really Slow Methods. Methods that uses charindex, patindex or LIKE.
I really can't recommend enough to read the article to learn about the tradeoffs among all these options.
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Finding all possible permutations of a given string in python
I have a string. I want to generate all permutations from that string, by changing the order of characters in it. For example, say:
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What is the best testing framework to use with Node.js? [closed]
...TJ Holowaychuk who is also the creator of Express.js (insanely fast (and small) server-side JavaScript web development framework built on Node.js and Connect). I recently saw that he also has a cool library called should.js which can be used together with Expresso for a even better testing experienc...
Why does direction of index matter in MongoDB?
...d query in the same order as the index will simply return the rows sequentially in the correct order.
Finding a record in a BTree takes O(Log(n)) time. Finding a range of records in order is only OLog(n) + k where k is the number of records to return.
If the records are out of order, the cost coul...
Are the shift operators () arithmetic or logical in C?
...ependent for right shifts of signed values.
Wikipedia says that C/C++ 'usually' implements an arithmetic shift on signed values.
Basically you need to either test your compiler or not rely on it. My VS2008 help for the current MS C++ compiler says that their compiler does an arithmetic shift.
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C++ Tuple vs Struct
... not the purpose of this discussion so I won't dive into the detail.
We all know that writing a == or < or > operator for every single struct definition will be a painful and buggy task. Let replace our custom comparator using std::tie and rerun our benchmark.
bool operator<(const Str...
How can I make git show a list of the files that are being tracked?
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If you want to list all the files currently being tracked under the branch master, you could use this command:
git ls-tree -r master --name-only
If you want a list of files that ever existed (i.e. including deleted files):
git log --pretty=f...
Junit: splitting integration test and Unit tests
...hat sort of other solutions there might be apart from annotations or physically separating the classes..
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ERROR ITMS-9000: “Redundant Binary Upload. There already exists a binary upload with build version '
...s version 3.75 and a build 1 has already been submitted, then next build shall be 2 or higher, but the version can still remain 3.75.
New updated and the recommended way of having the build numbers serial:
The older image to match the one below:
After a new binary is uploaded and processed (~5-...
How to reorder data.table columns (without copying)
... 2 2
# [3,] 0.3297416 1 3
From ?setcolorder:
In data.table parlance, all set* functions change their input by reference. That is, no copy is made at all, other than temporary working memory, which is as large as one column.
so should be pretty efficient. See ?setcolorder for details.
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