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How to count duplicate value in an array in javascript
...eturns the value of counts[x] if it is set, otherwise 0. Then just add one and set it again in the object and the count is done.
– Constantinius
Feb 7 '17 at 11:52
1
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How to implement Android Pull-to-Refresh
In Android applications such as Twitter (official app), when you encounter a ListView, you can pull it down (and it will bounce back when released) to refresh the content.
...
Measure the time it takes to execute a t-sql query
...asuring the "elapsed time" between events is to just grab the current date and time.
In SQL Server Management Studio
SELECT GETDATE();
SELECT /* query one */ 1 ;
SELECT GETDATE();
SELECT /* query two */ 2 ;
SELECT GETDATE();
To calculate elapsed times, you could grab those date values into var...
Django filter versus get for single object?
...lly implemented in Django, so there should be no "performance" difference (and the fact that you're thinking about it indicates you're violating one of the cardinal rules of programming, namely trying to optimize code before it's even been written and profiled -- until you have the code and can run ...
sed beginner: changing all occurrences in a folder
I need to do a regex find and replace on all the files in a folder (and its subfolders). What would be the linux shell command to do that?
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How to get the build/version number of your Android application?
I need to figure out how to get or make a build number for my Android application. I need the build number to display in the UI.
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Which is better: … or …
...ype attribute at all? If you're using HTML5, no. Otherwise, yes. HTML 4.01 and XHTML 1.0 specifies the type attribute as required while HTML5 has it as optional, defaulting to text/javascript. HTML5 is now widely implemented, so if you use the HTML5 doctype, <script>...</script> is valid...
SQLAlchemy: What's the difference between flush() and commit()?
What the difference is between flush() and commit() in SQLAlchemy?
5 Answers
5
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SQL Server Insert if not exists
...ROM EmailsRecebidos
WHERE De = @_DE
AND Assunto = @_ASSUNTO
AND Data = @_DATA);
END
replace with
BEGIN
IF NOT EXISTS (SELECT * FROM EmailsRecebidos
WHERE De = @_DE
AND Assunto = @_ASSUNTO
...
How is “=default” different from “{}” for default constructor and destructor?
...om simply doing {}. With the latter, the function becomes "user-provided". And that changes everything.
This is a trivial class by C++11's definition:
struct Trivial
{
int foo;
};
If you attempt to default construct one, the compiler will generate a default constructor automatically. Same goes...