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Get “Value” property in IGrouping
...ecause they want a list. If there was a Values property like they imagined then they'd have to do group.Values.ToList(). Conversely if they accepted any enumerable instead of a list then new DespatchGroup(group.Key, group) would work. The overhead is from the definition of DespachGroup not from the ...
How to move screen without moving cursor in Vim?
...u could map it to a key or combination understood but unmapped by Vim, and then emulating caps lock exclusively while in insert/replace mode, by hand or by something like github.com/tpope/vim-capslock . You probably won't need it outside of Vim, but if you do, write an xmodmap script to revert your ...
Mongo: find items that don't have a certain field
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If you don't care if the field is missing or null (or if it's never null) then you can use the slightly shorter and safer:
db.things.find( { a : null } ); // return if a is missing or null
It's safer because $exists will return true even if the field is null, which often is not the desired resul...
How to change spinner text size and text color?
... @FelipieConde For you ,it takes the ascent color at first , then you change into other color manually , So it look so tired. At First It Takes <item name="colorAccent">@color/color_primary</item> Then you manually changed by programmatic, So you feel the blink
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Determine if a function exists in bash
...ALL=C type -t rvm)" ] && [ "$(LC_ALL=C type -t rvm)" = function ]; then echo rvm is a function; else echo rvm is NOT a function; fi
rvm is a function
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Is it good practice to use java.lang.String.intern()?
...t you're going to compare. It's easy to forget to intern() all strings and then you can get confusingly incorrect results. Also, for everyone's sake, please be sure to very clearly document that you're relying on the strings being internalized.
The second disadvantage if you decide to internalize s...
Missing return statement in a non-void method compiles
...s smart enough to find the unreachable code ( the code after while loop) then why these below codes compiles, both have unreachable code but the method with if requires a return statement but the method with a while does not. public int doNotReturnAnything() { if(true){ ...
Retrieve the position (X,Y) of an HTML element relative to the browser window
...ent's position: absolute and position it at the same position as if fixed, then you'll get the correct 200px. I don't know a solution to this.
– Jānis Elmeris
May 2 '18 at 17:58
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How do I create a URL shortener?
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Thanks! Should I use the base-62 alphabet then? en.wikipedia.org/wiki/Base_62 But how can I convert the ids to a base-62 number?
– caw
Apr 12 '09 at 16:46
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Creating an R dataframe row-by-row
... with is the suggestion to create an empty list, keep a list index scalar, then each time add to the list a single-row dataframe and advance the list index by one. Finally, do.call(rbind,) on the list.
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