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Sass calculate percent minus px

... Sass cannot perform arithmetic on values that cannot be converted from one unit to the next. Sass has no way of knowing exactly how wide "100%" is in terms of pixels or any other unit. That's something only the browser knows. You need to use calc() instead. Check browser compa...
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PostgreSQL: Can you create an index in the CREATE TABLE definition?

...TE TABLE syntax. PostgreSQL does however create an index for unique constraints and primary keys by default, as described in this note: PostgreSQL automatically creates an index for each unique constraint and primary key constraint to enforce uniqueness. Other than that, if you want a non-uniq...
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How to get the list of all printers in computer

I need to get the list of all printers that connect to computer? 6 Answers 6 ...
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Implementing two interfaces in a class with same method. Which interface method is overridden?

Two interfaces with same method names and signatures. But implemented by a single class then how the compiler will identify the which method is for which interface? ...
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Entity Framework code first unique column

...odel will look like this now in EF CF 6.1+: public class User { public int UserId{get;set;} [StringLength(450)] [Index(IsUnique=true)] public string UserName{get;set;} } Update: if you use Fluent: public class UserMap : EntityTypeConfiguration<User> { public UserMap() ...
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jquery loop on Json data using $.each

... Have you converted your data from string to JavaScript object? You can do it with data = eval('(' + string_data + ')'); or, which is safer, data = JSON.parse(string_data); but later will only works in FF 3.5 or if you include json2....
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Why use pip over easy_install? [closed]

...ents file and then installing it with a single command on each side. Or to convert your requirements file to a local repo to use for in-house development. And so on. The only good reason that I know of to use easy_install in 2015 is the special case of using Apple's pre-installed Python versions w...
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onCreateOptionsMenu inside Fragments

... Interesting note: if you also override onCreateOptionsMenu in your containing Activity, both options menu items will be displayed. – Adam Johns Mar 4 '15 at 4:51 ...
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detach all packages while working in R

...ming the R window. (edit: 9/20/2019) In version 3.6.1 It may be helpful to convert loaded only names(sessionInfo()$loadedOnly) to explicitly attached packages first, and then detach the packages, as so. lapply(names(sessionInfo()$loadedOnly), require, character.only = TRUE) invisible(lapply(paste0('...
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How to cast an object in Objective-C

...tive-C works like Java, just remember to add asterisks to variables that point to Obj-C objects." – Dan Rosenstark Jun 14 '10 at 3:43 2 ...