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What are the Ruby Gotchas a newbie should be warned about? [closed]
I have recently learned the Ruby programming language, and all in all it is a good language. But I was quite surprised to see that it was not as simple as I had expected. More precisely, the "rule of least-surprise" did not seem very respected to me (of course this is quite subjective). For examp...
Generate Java classes from .XSD files…?
...e a gigantic QuickBooks SDK .XSD schema file which defines XML requests/responses that I can send/receive from QuickBooks.
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AngularJS - Access to child scope
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Scopes in AngularJS use prototypal inheritance, when looking up a property in a child scope the interpreter will look up the prototype chain starting from the child and continue to the parents until it finds the property, not th...
Turning multi-line string into single comma-separated
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You can use awk and sed:
awk -vORS=, '{ print $2 }' file.txt | sed 's/,$/\n/'
Or if you want to use a pipe:
echo "data" | awk -vORS=, '{ print $2 }' | sed 's/,$/\n/'
To break it down:
awk is great at handling data broken down into fields
-vORS=, sets the "ou...
SQL select join: is it possible to prefix all columns as 'prefix.*'?
I'm wondering if this is possible in SQL. Say you have two tables A and B, and you do a select on table A and join on table B:
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How to make an immutable object in Python?
...ve never needed this, it just struck me that making an immutable object in Python could be slightly tricky. You can't just override __setattr__ , because then you can't even set attributes in the __init__ . Subclassing a tuple is a trick that works:
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Why is a round-trip conversion via a string not safe for a double?
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I found the bug.
.NET does the following in clr\src\vm\comnumber.cpp:
DoubleToNumber(value, DOUBLE_PRECISION, &number);
if (number.scale == (int) SCALE_NAN) {
gc.refRetVal = gc.numfmt->sNaN;
goto lExit;
}
if (number.scale == SCALE_INF) {
gc.refRetVal = (number.sign? gc...
How to detect Windows 64-bit platform with .NET?
In a .NET 2.0 C# application I use the following code to detect the operating system platform:
29 Answers
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Regular cast vs. static_cast vs. dynamic_cast [duplicate]
...'ve been writing C and C++ code for almost twenty years, but there's one aspect of these languages that I've never really understood. I've obviously used regular casts i.e.
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How to grant permission to users for a directory using command line in Windows?
How can I grant permissions to a user on a directory (Read, Write, Modify) using the Windows command line?
17 Answers
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