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Is there a more elegant way of adding an item to a Dictionary safely?
... for reference conversions.)
If you're using C# 3 and you have a distinct set of keys, you can make this even neater:
var currentViews = new Dictionary<string, object>()
{
{ "Customers", "view2" },
{ "Employees", "view1" },
{ "Reports", "view1" },
};
That won't work in your cas...
How do I replace NA values with zeros in an R dataframe?
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The dplyr hybridized options are now around 30% faster than the Base R subset reassigns. On a 100M datapoint dataframe mutate_all(~replace(., is.na(.), 0)) runs a half a second faster than the base R d[is.na(d)] <- 0 option. What one wants to avoid specifically is using an ifelse() or an if_else...
Select 50 items from list at random to write to file
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I used this to easily create a test / train set for a machine learning project. Using random.choice(mylist,3) wouldn't create two disjoint sets as this did.
– Monica Heddneck
Jul 31 '17 at 23:38
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Can Protractor and Karma be used together?
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UPDATE. Here is a simple package I've created to add minimal Karma setup to any project with one single command npm install min-karma.
I'd like to clarify some possible misconceptions about Karma and Protractor. Karma FAQ actually does refer to Adapter for Angular's Scenario Runner, which...
ThreadStatic v.s. ThreadLocal: is generic better than attribute?
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And if you're not using initializers to set the value, but are instead setting it at some later point after initialization, using [ThreadStatic] is syntactically cleaner.
– Thought
Apr 9 '15 at 19:42
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Return only string message from Spring MVC 3 Controller
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Meant that for the second point, about needing to set a custom content type or returning a binary type, you can still use the ResponseEntity for those means.
– Scott
Oct 6 '11 at 21:41
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Stop Mongoose from creating _id property for sub-document array items
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Have you try, for the third level to set { _id : true } ?
– throrin19
Jul 13 '16 at 7:06
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phpunit mock method multiple calls with different arguments
...es an SQL query string on input. Can I create mock for this class (DB) and set different return values for different Query method calls that depends on input query string?
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For files in directory, only echo filename (no path)
...o for f in $(...) ... fails if any filename contains whitespace unless you set IFS, may fail if any filename contains a glob char unless you set -f/-o noglob, and depending on system or shell echo may fail if any filename is hyphen+letter or contains backslash. OTOH just ls -1 /path/to/dir all by it...
Path to MSBuild
...a single entry point in the registry for MsBuildToolsPath for the 15.0 toolset
– Paciv
Mar 8 '17 at 11:15
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