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'echo' without newline in a shell script
...ipt uses a version that doesn't recognize -n.
The printf command has much more consistent behavior. echo is fine for simple things like echo hello, but I suggest using printf for anything more complicated.
What system are you on, and what shell does your script use?
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How can I concatenate two arrays in Java?
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How do you find the row count for all your tables in Postgres
...se is hard to say. Normally I make that decision based on whether there's more useful information I also want to use inside of pg_class or inside of pg_stat_user_tables. For basic counting purposes just to see how big things are in general, either should be accurate enough.
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What tools are there for functional programming in C?
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I think this approach is far more pragmatic than using macros to create a functional language inside c. Using pure functions appropriately is more likely to improve a system than using map instead of for loops.
– Andy Till
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Check for internet connection availability in Swift
...s, although its possible to use Objective-C libraries in Swift, I wanted a more pure Swift solution. The existing Apple Reachability class and other third party libraries seemed to be too complicated for me to translate to Swift. I Googled some more and I came across this article which shows a simpl...
JSF backing bean structure (best practices)
...ormally session or application scope. This type of bean "supports" one or more views in the "View" concern of the MVC design pattern. The typical use case is supplying an ArrayList to JSF h:selectOneMenu drop-down lists that appear in more than one JSF view. If the data in the dropdown lists is par...
How do you calculate the average of a set of circular data? [closed]
...tion 26.56 deg relative to where I started. In this sense 26.56 makes much more sense as the average direction of {0,0,90} deg than 30 deg. The algebraic average is just one of many possible averages (see en.wikipedia.org/wiki/Mean )-- and it seems quite irrelevant for the purpose of averaging dire...
Losing scope when using ng-include
...n the partial: ng-model="someObj.lineText; fiddle
not recommended, this is more of a hack: use $parent in the partial to create/access a lineText property on the HomeCtrl $scope: ng-model="$parent.lineText"; fiddle
It is a bit involved to explain why the above two alternatives work, but it is fu...
Bootstrap table without stripe / borders
...lt style. CSS are loaded with order; the latter overwrites the former, the more specific overwrites the more general ones.
– WesternGun
Mar 6 '18 at 16:28
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Scatterplot with marginal histograms in ggplot2
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