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Why is “copy and paste” of code dangerous? [closed]
...spoken assumptions to be correct, copying it into another place results in errors unless these assumptions also hold in the new place. Therefore, the pasted code is often wrong from the start and not just after the next change.
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Tricks to manage the available memory in an R session
...ames to the data= argument of regression functions. It does result in some errors if I forget to add variables to both the formula and the select= vector, but it still saves a lot of time due to decreased copying of objects and reduces the memory footprint significantly. Say I have 4 million records...
What are some (concrete) use-cases for metaclasses?
...Field attributes, they are injected with their names (for more informative error messages, for example), and grouped into a _fields dictionary (for easy iteration, without having to look through all the class attributes and all its base classes' attributes every time):
>>> class A(Model):
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AngularJS - How to use $routeParams in generating the templateUrl?
...$routeParams.secondaryNav+'.html'
});
});
Which yielded this error:
Unknown provider: $routeParams from myApp
If something like that isn't possible you can change your templateUrl to point to a partial HTML file that just has ng-include and then set the URL in your controller us...
Handling very large numbers in Python
... on the decimal Module. There are examples of use on these foruns: OverflowError: (34, 'Result too large')
Another reference: http://docs.python.org/2/library/decimal.html
You can even using the gmpy module if you need a speed-up (which is likely to be of your interest): Handling big numbers in code...
Hidden Features of VB.NET?
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Imports it should be. ;-) Somehow, this error has gone undetected (and garnered 28 upvotes) for nearly a whole year.
– Konrad Rudolph
Jul 13 '09 at 17:37
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Validating parameters to a Bash script
...ted in the rm statement. Which means you'll get No such file or directory errors.
Forking off grep and such for basic operations is daft. Especially when you're using a crappy shell to avoid the "heavy" weight of bash.
I also noticed a few quoting issues, for instance around a parameter expansion ...
Warning: The Copy Bundle Resources build phase contains this target's Info.plist file
...ersions rather than developing Xcode to show us the solution for the weird errors of weird numbers all the time.
– MBH
Oct 27 '17 at 12:15
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Nullable type issue with ?: Conditional Operator
...ompiler will auto-assign the specific variable-type's default value and no error will be encountered. Example:
DateTime foo;
foo = true ? default(DateTime) : new DateTime(0);
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How to use MySQL DECIMAL?
...es: DECIMAL[(M[,D])] [UNSIGNED] [ZEROFILL]. It will return an out-of-range error for negative values. You can likewise create unsigned FLOAT and DOUBLE. Manual: dev.mysql.com/doc/refman/5.0/en/numeric-type-overview.html
– Markus AO
Jun 21 '15 at 8:16
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