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PostgreSQL Crosstab Query
... , status text
, ct integer -- "count" is a reserved word in standard SQL
);
INSERT INTO tbl VALUES
('A', 'Active', 1), ('A', 'Inactive', 2)
, ('B', 'Active', 4), ('B', 'Inactive', 5)
, ('C', 'Inactive', 7); -- ('C', 'Active') is missing
Simple form - not fit f...
Count Rows in Doctrine QueryBuilder
I'm using Doctrine's QueryBuilder to build a query, and I want to get the total count of results from the query.
10 Answ...
How to get the first element of an array?
...x of 0. You know what they say about assumption...
– Andy
Aug 9 '15 at 16:19
16
@Andy There were...
How to convert an Array to a Set in Java
...s?
For JDK < 8, I would just write the obvious for loop to do the wrap and add-to-set in one pass.
For JDK >= 8, an attractive option is something like:
Arrays.stream(intArray).boxed().collect(Collectors.toSet());
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List OrderBy Alphabetical Order
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I wonder if you want to OrderBy Firstname and Lastname... what should you write?
– balexandre
Apr 16 '09 at 7:03
65
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How to loop through an array containing objects and access their properties
I want to cycle through the objects contained in an array and change the properties of each one. If I do this:
15 Answers
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Compute a confidence interval from sample data
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sp.stats.stderr is deprecated. I substituted sp.stats.sem and it worked great!
– Bmayer0122
Feb 23 '13 at 1:44
1
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Script to get the HTTP status code of a list of urls?
...rs will notice that this uses one curl process per URL, which imposes fork and TCP connection penalties. It would be faster if multiple URLs were combined in a single curl, but there isn't space to write out the monsterous repetition of options that curl requires to do this.)
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How to safely call an async method in C# without await
... PerformAsyncTaskWithoutAwait(this Task task, Action<Task> exceptionHandler) { var dummy = task.ContinueWith(t => exceptionHandler(t), TaskContinuationOptions.OnlyOnFaulted); } } Usage: MyAsyncMethod().PerformAsyncTaskWithoutAwait(t => log.ErrorFormat("An...
Print a file's last modified date in Bash
...
You can use the
stat
command
stat -c %y "$entry"
More info
%y time of last modification, human-readable
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