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How do I extend a class with c# extension methods?
...tension methods use instances of that type.
There is nothing stopping you from creating your own static helper method like this:
static class DateTimeHelper
{
public static DateTime Tomorrow
{
get { return DateTime.Now.AddDays(1); }
}
}
Which you would use like this:
DateTim...
Android - get children inside a View?
...vary based on how vertical/horizontal the view hierarchy is.
Cross-posted from: Android | Get all children elements of a ViewGroup
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rmagick gem install “Can't find Magick-config”
...mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it: graphicsmagick-libmagick-dev-compat <<< Installing this package worked for me.
– OmnipotentEntity
Dec 12 '12 at ...
Transaction marked as rollback only: How do I find the cause
...pass through @Transactional proxy wrapper, i.e. uncaught. See other answer from Vojtěch for the full story. There could be nested @Transactional methods that can mark your transaction rollback-only.
– Yaroslav Stavnichiy
Mar 17 '17 at 15:52
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WPF Data Binding and Validation Rules Best Practices
...
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, ...
Sorted collection in Java
...
From the Javadoc: "The Iterator provided in method iterator() is not guaranteed to traverse the elements of the PriorityQueue in any particular order."
– Christoffer Hammarström
Mar 2 '...
Why would json_encode return an empty string
...
If reading from the database just use, $conn->set_charset("utf8");
– Andrew Briggs
Feb 17 '17 at 23:38
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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...