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How to configure Ruby on Rails with no database?
...-record option to generate an application without a database
Notice the extra hyphen '-' as opposed to previous Rails versions.
rails new myApp --skip-active-record
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Service Reference Error: Failed to generate code for the service reference
...s parameters inside it are of type System.Guid, they will be translated to strings in the generated client if the reuse types option is disabled.
An alternative that I prefer to disabling reusing types is to add the service reference from Class Library project specifically created for that purpose....
How to decide font color in white or black depending on background color?
...Color, darkColor) {
var color = (bgColor.charAt(0) === '#') ? bgColor.substring(1, 7) : bgColor;
var r = parseInt(color.substring(0, 2), 16); // hexToR
var g = parseInt(color.substring(2, 4), 16); // hexToG
var b = parseInt(color.substring(4, 6), 16); // hexToB
return (((r * 0.299) + (g * ...
Correct format specifier to print pointer or address?
...tr_t) cast is unambiguously recommended by GCC when it can read the format string at compile time. I think it is correct to request the cast, though I'm sure there are some who would ignore the warning and get away with it most of the time.
Kerrek asks in the comments:
I'm a bit confused abo...
How to sort an array in Bash
...
Next, the sort <<<"${array[*]}" part
<<<, called here strings, takes the expansion of "${array[*]}", as explained above, and feeds it into the standard input of sort.
With our example, sort is fed this following string:
a c
b
f
3 5
Since sort sorts, it produces:
3 5
a c
b
f...
Why do some scripts omit the closing PHP tag, '?>'? [duplicate]
...mitting the closing tag is just one solution for avoiding blanks and other characters at the end of file. For example any char which is accidentally added behind the closing tag would trigger an error when trying to modify header info later.
Removing the closing tag is kind of "good practice" refer...
What is the best way to implement nested dictionaries?
...se objects? My autovivification object contains just pandas dataframes and string.
– jason
Feb 11 '19 at 14:39
@jason ...
How do you loop in a Windows batch file?
... (filenameset) DO command
or
FOR /F ["options"] %%parameter IN ("Text string to process") DO command
syntax-FOR-Command Results
FOR /F ["options"] %%parameter IN ('command to process') DO command
It
Take a set of data
Make a FOR Parameter %%G equal to some part of that data
Perform a co...
Using Node.JS, how do I read a JSON file into (server) memory?
...What that gets you is an object, and it doesn't even bother to implement tostring().
– David A. Gray
Apr 9 '18 at 3:05
3
...
How to check if all of the following items are in a list?
...ems:
>>> a = {'key': 'value'}
>>> b = {'key': 'value', 'extra_key': 'extra_value'}
>>> all(item in a.items() for item in b.items())
True
>>> all(item in b.items() for item in a.items())
False
That's because dict.items returns tuples of key/value pairs, and much...