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What's the difference between process.cwd() vs __dirname?
... js doc
process.cwd()
cwd is a method of global object process, returns a string value which is the current working directory of the Node.js process.
As per node js doc
__dirname
The directory name of current script as a string value. __dirname is not actually a global but rather local to each mo...
Why do we not have a virtual constructor in C++?
...) to allocate memory
invoke Derived() with placement new.
OR
create an extra vtable entry for a function that combines dynamic allocation and construction
So - it doesn't seem insurmountable to specify and implement virtual constructors, but the million-dollar question is: how would it be bett...
Django - How to rename a model field using South?
...
Django 1.7 introduced Migrations so now you don't even need to install extra package to manage your migrations.
To rename your model you need to create empty migration first:
$ manage.py makemigrations <app_name> --empty
Then you need to edit your migration's code like this:
from djan...
Why is early return slower than else?
...king up are the
same object (which in this case they will be because short strings
that could be identifiers are interned so identical identifiers use
the exact same string).
Finally when the slot is full, the hash matches exactly, but the keys
are not the identical object, then and only then will P...
How to pass parameters to ThreadStart method in Thread?
...
The simplest is just
string filename = ...
Thread thread = new Thread(() => download(filename));
thread.Start();
The advantage(s) of this (over ParameterizedThreadStart) is that you can pass multiple parameters, and you get compile-time chec...
Rails raw SQL example
...
@AkshayGoyal you can use normal ruby string interpolation within the block. SELECT * FROM users WHERE users.id = #{ user.id }
– Nathan Beck
Nov 15 '19 at 18:21
...
Is it possible to pass a flag to Gulp to have it run tasks in different ways?
...ulp-uglify');
var minimist = require('minimist');
var knownOptions = {
string: 'env',
default: { env: process.env.NODE_ENV || 'production' }
};
var options = minimist(process.argv.slice(2), knownOptions);
gulp.task('scripts', function() {
return gulp.src('**/*.js')
.pipe(gulpif(options...
Why does this method print 4?
...t execution if you'd prefer-
static int cnt = 0;
public static void main(String[] args) {
try {
main(args);
} catch (Throwable ignore) {
cnt++;
try {
System.out.println(cnt);
} catch (Throwable t) {
}...
How do I expand the output display to see more columns of a pandas DataFrame?
...ted encoding of the console.
Specifies the encoding to be used for strings returned by to_string,
these are generally strings meant to be displayed on the console.
display.expand_frame_repr: [default: True] [currently: True]
: boolean
Whether to print out the full DataFrame r...
How to add http:// if it doesn't exist in the URL?
...
Scan the string for ://, if it does not have it, prepend http:// to the string.., everything else just use the string as is.
This will work unless you have rubbish input string.
...