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How to strip all whitespace from string
...egex is cached, so it's not as slow as you'd imagine. Compiling it beforehand helps some, but would only matter in practice if you call this many times:
$ python -m timeit -s 'import re; e = re.compile(r"\s+")' 'e.sub("", " \t foo \n bar ")'
100000 loops, best of 3: 7.76 usec per loop
Even thoug...
How to get cumulative sum
... Col1,
SUM(Col1) OVER(ORDER BY RowId ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS Col2
FROM tablehh
ORDER BY RowId
or
SELECT
GroupID,
RowID,
Col1,
SUM(Col1) OVER(PARTITION BY GroupID ORDER BY RowId ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS Col2
FROM tabl...
How to debug PDO database queries?
...could just echo the final SQL query string, try it myself on the database, and tweak it until I fixed the error, then put that back into the code.
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AngularJS - Any way for $http.post to send request parameters instead of JSON?
...ld code that is making an AJAX POST request through jQuery's post method and looks something like this:
13 Answers
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Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception?
Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception ?
2 Answers
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Can't access object property, even though it shows up in a console log
...misleading; the state of the object displayed is only resolved when you expand the > in the console. It is not the state of the object when you console.log'd the object.
Instead, try console.log(Object.keys(config)), or even console.log(JSON.stringify(config)) and you will see the keys, or the s...
Difference between double and single curly brace in angular JS?
...gular world, i am bit confused with the use of double curly braces {{}}
and single curly braces{} or sometime no curly brace is used to include the expression like in the directives
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How to pass arguments and redirect stdin from a file to program run in gdb?
...
Pass the arguments to the run command from within gdb.
$ gdb ./a.out
(gdb) r < t
Starting program: /dir/a.out < t
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Converting an array of objects to ActiveRecord::Relation
... ActiveRecord::Relation since a Relation is just a builder for a SQL query and its methods do not operate on actual data.
However, if what you want is a relation then:
for ActiveRecord 3.x, don’t call all and instead call scoped, which will give back a Relation which represents the same records...
iTextSharp - Sending in-memory pdf in an email attachment
...what I am doing wrong in my code. I run the code above from a ASP.Net page and get "Cannot Access a Closed Stream".
5 Answ...