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Why is inserting in the middle of a linked list O(1)?
...dd 50 nodes in a single iteration and each of those nodes is just O(1) the time to unlink two adjacent nodes and insert your new one..
Edit: Man, you type a second paragraph and all of a sudden instead of being the first responder you're the 5th saying the same thing as the first 4!
...
Docker and securing passwords
...mes, passwords, tokens, anything sensitive) as environment variables at runtime. This is possible via the -e argument (for individual vars on the CLI) or --env-file argument (for multiple variables in a file) to docker run. Read this for using environmental with docker-compose.
Using --env-file is ...
How to find nth occurrence of character in a string?
...f the expression,
(/[^/]*){2} means that the group must match extactly {2} times,
[^/]* is again any number of characters that are not a /,
([^/]*) groups the previos expression in a single entity. This is the 2nd group of the expression.
This way you have only to get the substring that matches th...
JavaScript: client-side vs. server-side validation
... it's not 100% reliable. If two users are filling out the form at the same time, they may both be told that user1 is an available username. When they submit, they will both get the same username unless you re-check server side. And even a check in the server application code can have the same proble...
How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
.... ON DUPLICATE KEY UPDATE. For example:
INSERT INTO `usage`
(`thing_id`, `times_used`, `first_time_used`)
VALUES
(4815162342, 1, NOW())
ON DUPLICATE KEY UPDATE
`times_used` = `times_used` + 1
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How to generate string of a certain length to insert into a file to meet a file size criteria?
...always use the a constructor for string which takes a char and a number of times you want that character repeated:
string myString = new string('*', 5000);
This gives you a string of 5000 stars - tweak to your needs.
shar...
Using jquery to get all checked checkboxes with a certain class name
I know I can get all checked checkboxes on a page using this:
16 Answers
16
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DISABLE the Horizontal Scroll [closed]
Ok for some reason my webpage scrolls from left to right and shows a lot of ugly space.
12 Answers
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String.Replace ignoring case
... method:
High CPU and MEMORY efficiency;
It is the fastest solution, 2.5 times faster than other's methods
with regular expressions (proof in the end);
Suitable for removing parts from the input string (set newValue to
null), optimized for this;
Same as original .NET C# string.Replace behavior, sa...