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WPF Data Binding and Validation Rules Best Practices
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From MS's Patterns & Practices documentation:
Data Validation and Error Reporting
Your view model or model will often be
required to perform data validation
and to signal any data validation
errors to the v...
Empty arrays seem to equal true and false at the same time
...re's what's happening, starting at rule #1:
1. If Type(x) is different from Type(y), go to step 14.
The next rule that applies is #19:
19. If Type(y) is Boolean, return the result of the comparison x ==
ToNumber(y).
The result of ToNumber(false) is 0, so we now have:
[] == 0
Again, ...
Difference between \w and \b regular expression meta characters
...tanding that both these metacharacters are used for word boundaries. Apart from this, which meta character is efficient for multilingual content?
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How to turn off INFO logging in Spark?
...s just after creating SparkContext reduced stderr lines logged for my test from 2647 to 163. However creating the SparkContext itself logs 163, up to
15/08/25 10:14:16 INFO SparkDeploySchedulerBackend: SchedulerBackend is ready for scheduling beginning after reached minRegisteredResourcesRatio: 0.0...
Is there an R function for finding the index of an element in a vector?
...s between the examples. match(c(2,3,3), c(1:4)) returns different results from which(c(2,3,3) %in% c(1:4)) without needing a longer first vector and as many changes from example to example. It's also worth noting that they handle non-matches very differently.
– John
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Convert pandas timezone-aware DateTimeIndex to naive timestamp, but in certain timezone
...ion, this functionality has been added to pandas in the meantime. Starting from pandas 0.15.0, you can use tz_localize(None) to remove the timezone resulting in local time.
See the whatsnew entry: http://pandas.pydata.org/pandas-docs/stable/whatsnew.html#timezone-handling-improvements
So with my ex...
What are some alternatives to ReSharper? [closed]
... both have talented teams constantly improving them. We have all benefited from the competition between these two. I won't repeat the many good discussions/comparisons about them that can be found on Stack Overflow and elsewhere.
Another alternative worth checking out:
JustCode, by Telerik. Thi...
Are HTTP headers case-sensitive?
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Header names are not case sensitive.
From RFC 2616 - "Hypertext Transfer Protocol -- HTTP/1.1", Section 4.2, "Message Headers":
Each header field consists of a name followed by a colon (":") and the field value. Field names are case-insensitive.
The updati...
How to assert two list contain the same elements in Python? [duplicate]
...untEqual(doc) which does exactly what you are looking for, as you can read from the python standard library documentation. The method is somewhat misleadingly named but it does exactly what you are looking for.
a and b have the same elements in the same number, regardless of their order
Here a...
Zip lists in Python
...e entries are 3-tuples (ai, bi, ci). Imagine drawing a zipper horizontally from left to right.
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