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Rails: how do I validate that something is a boolean?

...age: validates :field, inclusion: { in: [ true, false ], message: "Please, select one!" } – tagaism Mar 23 '18 at 9:28  |  show 1 more comment...
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Nginx serves .php files as downloads, instead of executing them

...an't understand a .php file (or for that matter any extension apart from a select few like .html, .js etc. which are static files) Thus in order to run other kinds of files we need something that sits between nginx and the application (here the php application). This is where common gateway interfac...
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Difference between BeautifulSoup and Scrapy crawler?

...on't have to wait for a request to finish before sending another request). Selectors: This is where we can compare scrapy with beautiful soup. Selectors are what allow us to select particular data from the webpage like heading, certain div with a class name etc.). Scrapy uses lxml for parsing which ...
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Is it safe to shallow clone with --depth 1, create commits, and pull updates again?

...hallow fetch/clone too. All the details are in "shallow.c: the 8 steps to select new commits for .git/shallow". Update June 2015: Git 2.5 will even allow for fetching a single commit! (Ultimate shallow case) Update January 2016: Git 2.8 (Mach 2016) now documents officially the practice of getti...
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Using numpad in Vi (Vim) via PuTTY

...Mac Terminal app, try Preferences --> Profiles --> Advanced --> deselect "Allow VT100 application keypad mode" – HaPsantran Nov 12 '14 at 15:36 ...
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How do I find files that do not contain a given string pattern?

... -l, --files-with-matches Only the names of files containing selected lines are written share | improve this answer | follow | ...
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Regex - Should hyphens be escaped? [duplicate]

Hyphen is a special character in regex, for instance, to select a range, I could do something like: 3 Answers ...
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How can I import a database with MySQL from terminal?

...mmand prompt (mysql>), then simply type source full_path_of_file (note: select database by command USE DATABASE_NAME before import). – Ankit Sharma May 28 '14 at 8:15 3 ...
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Is there a way to auto-adjust Excel column widths with pandas.ExcelWriter?

..._params) #Output some SQL Server data into a dataframe my_sql_query = """ SELECT * FROM dbo.my_table """ my_dataframe = pd.read_sql_query(my_sql_query,con=read_engine) #Set destination directory to save excel. xlsFilepath = r'H:\my_project' + "\\" + 'my_file_name.xlsx' writer = pd.ExcelWriter(xlsF...
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Is it possible to solve the “A generic array of T is created for a varargs parameter” compiler warni

... As you can see in Joseph Darcy's blog post, the Project Coin exercise to select some small incremental language improvements for Java 7 accepted Bob Lee's proposal to allow something like @SuppressWarnings("varargs") at the method side to make this warning go away in situations where it was known ...