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Why should eval be avoided in Bash, and what should I use instead?
...\n"
# 2 -> "$2"
# 3 -> "$3"
# 4 -> "$4"
# etc.
printf "$1\n" "${@:2}"
}
function error
{
# Send the first element as one argument, and the rest of the elements as a combined argument.
# Arguments to println:
# 1 -> '\e[31mError (%d): %s\e[m'
...
How do you create a random string that's suitable for a session ID in PostgreSQL?
...tgreSQL provides a type that is exactly 128 bits. Unlike text and varchar, etc which store as a varlena which has overhead for the length of the string.
PostgreSQL nifty UUID comes with some default operators, castings, and features.
...
Static linking vs dynamic linking
...g it all before it can be used (emptying most of the caches, hitting TLBs) etc. There was a time when this was considered slow.
So you would not have any benefit anymore.
I do not recall what OS (Solaris or FreeBSD) gave me problems with my Unix build system because I just wasn't doing this and w...
Sequelize.js: how to use migrations and sync
... will need to include createdAt/updatedAt, fields needed for associations, etc.
For initial table creation down should have:
migration.dropTable('MyTable');
But subsequent updates to the table structure can leave this out and just use alter table.
./node_modules/.bin/sequelize --migrate
An ex...
Code coverage with Mocha
...s empty always, there is nothing shown about uncovered blocks or % covered etc just headers of the table
– TGW
May 2 '18 at 7:36
...
What does yield mean in PHP?
... your code into many closures or mix it with other code, or use callbacks, etc... You just use yield to add a breakpoint, and you can continue from that breakpoint if you are ready.
Add breakpoint without generators:
$closure1 = function ($injected1){
//task1 on $injected1
return $returned...
Javascript equivalent of Python's zip function
... iterable (e.g. in Python you can use zip on strings, ranges, map objects, etc.), you could define the following:
function iterView(iterable) {
// returns an array equivalent to the iterable
}
However if you write zip in the following way, even that won't be necessary:
function zip(arrays) {...
What does “not run” mean in R help pages?
...ul, e.g., for
interactive functions, functions
accessing the Internet etc.. Do not
misuse it to make life easier for you
by giving examples which cannot be
executed.
share
|
improve thi...
How to detect my browser version and operating system using JavaScript?
...ation from; since this is entirely proprietary. Maybe some day, Google, W3 etc. will offer an API to crowdsource and make publicly available all the different system names and their relations that they gather from their users.
– Domi
Mar 15 '15 at 6:20
...
How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
... example where this is not the case @BigRon? What time zone, ruby version, etc does not behave this way?
– WattsInABox
Aug 14 '17 at 18:47
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