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int to hex string
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
how to permit an array with strong parameters
...
This https://github.com/rails/strong_parameters seems like the relevant section of the docs:
The permitted scalar types are String, Symbol, NilClass, Numeric, TrueClass, FalseClass, Date, Time, DateTime, StringIO, IO,
Action...
How do I get the find command to print out the file size with the file name?
If I issue the find command as follows:
15 Answers
15
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Difference between StringBuilder and StringBuffer
What is the main difference between StringBuffer and StringBuilder ?
Is there any performance issues when deciding on any one of these?
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How to check if a URL is valid
...se:
url =~ /\A#{URI::regexp}\z/
If you only want to check for web URLs (http or https), use this:
url =~ /\A#{URI::regexp(['http', 'https'])}\z/
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const vs constexpr on variables
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Using numpy to build an array of all combinations of two arrays
I'm trying to run over the parameters space of a 6 parameter function to study it's numerical behavior before trying to do anything complex with it so I'm searching for a efficient way to do this.
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Passing additional variables from command line to make
...d here which is included in the GNU Make book by Stallman and McGrath (see http://www.chemie.fu-berlin.de/chemnet/use/info/make/make_7.html). It provides the example:
archive.a: ...
ifneq (,$(findstring t,$(MAKEFLAGS)))
+touch archive.a
+ranlib -t archive.a
else
ranlib archi...
Setting environment variables on OS X
...s!
# grep -E "^setenv" /etc/launchd.conf | xargs -t -L 1 launchctl
#
# See http://www.digitaledgesw.com/node/31
# and http://stackoverflow.com/questions/135688/setting-environment-variables-in-os-x/
#
# Note that you must hardcode the paths below, don't use environment variables.
# You also need to ...
How to escape text for regular expression in Java
Does Java have a built-in way to escape arbitrary text so that it can be included in a regular expression? For example, if my users enter "$5", I'd like to match that exactly rather than a "5" after the end of input.
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