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A gentle tutorial to Emacs/Swank/Paredit for Clojure

I am moving to Emacs to work on Clojure /Lisp. What is all the information I need to setup on Emacs to be able to do the following? ...
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Regex to validate date format dd/mm/yyyy

... Edit February 14th 2019: I've removed a comma that was in the regex which allowed dates like 29-0,-11 share | improve this answer | follow | ...
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Add vertical whitespace using Twitter Bootstrap?

...g the documentation for used notation: Spacing utilities that apply to all breakpoints, from xs to xl, have no breakpoint abbreviation in them. This is because those classes are applied from min-width: 0 and up, and thus are not bound by a media query. The remaining breakpoints, however, d...
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How do I get the size of a java.sql.ResultSet?

...ng about them to others, regardless of whether they are static or not. Actually creating an instance of the object and calling the method is implied. – laz Oct 10 '08 at 18:23 51 ...
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Gradle build without tests

... Try: gradle assemble To list all available tasks for your project, try: gradle tasks UPDATE: This may not seem the most correct answer at first, but read carefully gradle tasks output or docs. Build tasks ----------- assemble - Assembles the outputs...
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Multiple file extensions in OpenFileDialog

...te groups so JPG are *.jpg and *.jpeg, TIFF are *.tif and *.tiff and also 'All graphic types'? How can I do that? 3 Answers...
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Why does C++ not allow inherited friendship?

Why is friendship not at least optionally inheritable in C++? I understand transitivity and reflexivity being forbidden for obvious reasons (I say this only to head off simple FAQ quote answers), but the lack of something along the lines of virtual friend class Foo; puzzles me. Does anyone know ...
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Omit rows containing specific column of NA

...# 2 2 10 33 EDIT: Only return rows with no NAs If you want to eliminate all rows with at least one NA in any column, just use the complete.cases function straight up: DF[complete.cases(DF), ] # x y z # 2 2 10 33 Or if completeFun is already ingrained in your workflow ;) completeFun(DF, na...
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Why should I capitalize my SQL keywords? [duplicate]

Simple question. I personally find a string of lowercase characters to be more readable than a string of uppercase characters. Is some old/popular flavor of SQL case-sensitive or something? ...
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How do you fix a bad merge, and replay your good commits onto a fixed merge?

I accidentally committed an unwanted file ( filename.orig while resolving a merge) to my repository several commits ago, without me noticing it until now. I want to completely delete the file from the repository history. ...