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Rails nested form with has_many :through, how to edit attributes of join model?
...ser.build_profile # this will work
user.profile.build # this will throw error
Read the has_one association documentation for more details.
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node.js fs.readdir recursive directory search
..._dirname)
.then(files => console.log(files))
.catch(e => console.error(e));
Node 10.10+
Updated for node 10+ with even more whizbang:
const { resolve } = require('path');
const { readdir } = require('fs').promises;
async function getFiles(dir) {
const dirents = await readdir(dir, { wit...
Are loops really faster in reverse?
...hing like
array.forEach(function(i) {
do_it(i);
});
It is also less error-prone and browsers have a chance to optimize your code.
[REMARK: not only the browsers, but you too have a space to optimize easily, just redefine the forEach function (browser dependently) so that it uses the latest ...
Tab space instead of multiple non-breaking spaces (“nbsp”)?
...he W3C validator is strict to the degree of always flagging custom tags as errors. It's up to you which is more important. It's about time we got a decent official implimentation of tabs added to the Html mark-up set. Hope this helps.
– WonderWorker
Jun 8 '16 a...
What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
...theses, it will first run echo foo then will try to run foo which gives an error
– Accountant م
Apr 18 '19 at 17:25
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How do I push amended commit to the remote Git repository?
...ve resolved any conflicts, you can push again.
So:
git pull
If you get errors in pull, maybe something is wrong in your local repository configuration (I had a wrong ref in the .git/config branch section).
And after
git push
Maybe you will get an extra commit with the subject telling about a...
What are “res” and “req” parameters in Express functions?
...
I noticed one error in Dave Ward's answer (perhaps a recent change?):
The query string paramaters are in request.query, not request.params. (See https://stackoverflow.com/a/6913287/166530 )
request.params by default is filled with the va...
How to split strings across multiple lines in CMake?
...t;STREQUAL:${CMAKE_CXX_SIMULATE_ID},MSVC>>"
">:"
"-Wall -Werror "
">$<"
"$<CXX_COMPILER_ID:GNU>:"
"-Wno-multichar -Wno-sign-compare "
">")
add_compile_options(${WARNING_OPTIONS})
This is because the resulting options are passed to the compiler in quotes
/us...
Difference between events and delegates and its respective applications [closed]
...
Events can't directly be assigned. In this case you can't do the previous error that I have showed with overriding the behavior.
No one outside of your class can raise the event.
Events can be included in an interface declaration, whereas a field cannot
notes
EventHandler is declared as the foll...
What is the ellipsis (…) for in this method signature?
...oid process(String[] s){}
void process(String...s){}
then a compile-time error occurs.
Source: The Java Programming Language specification, where the technical term is variable arity parameter rather than the common term varargs.
...