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Regex Named Groups in Java
...and Matching Strings with Balanced Parentheses slide)
Example:
String:
"TEST 123"
RegExp:
"(?<login>\\w+) (?<id>\\d+)"
Access
matcher.group(1) ==> TEST
matcher.group("login") ==> TEST
matcher.name(1) ==> login
Replace
matcher.replaceAll("aaaaa_$1_sssss_$2____") ==>...
How do I sort strings alphabetically while accounting for value when a string is numeric?
...umber
/// </summary>
/// <param name="value">String to test</param>
/// <returns>True if numeric</returns>
public static bool IsNumeric(string value)
{
return int.TryParse(value, out _);
}
/// <inheritdoc />
public int Comp...
MySQL JOIN the most recent row only?
...'
LIMIT 10, 20;
Note that a JOIN is just a synonym for INNER JOIN.
Test case:
CREATE TABLE customer (customer_id int);
CREATE TABLE customer_data (
id int,
customer_id int,
title varchar(10),
forename varchar(10),
surname varchar(10)
);
INSERT INTO customer VALUES (1);
INS...
memcpy() vs memmove()
...ve implementations shown here. memcpy just loops, while memmove performs a test to determine which direction to loop in to avoid corrupting the data. These implementations are rather simple. Most high-performance implementations are more complicated (involving copying word-size blocks at a time rath...
Calling a function every 60 seconds
... This is good example! When you use timers it harder to write unit tests, but with this approach - it's easy
– Dmytro Medvid
Sep 5 '16 at 17:18
...
Find object by id in an array of JavaScript objects
...irst value in the array, if an element in the array satisfies the provided testing function. Otherwise undefined is returned.
If you want to find its index instead, use findIndex():
myArray.findIndex(x => x.id === '45');
From MDN:
The findIndex() method returns the index of the first e...
Does name length impact performance in Redis?
...s with a benchmark utility called redis-benchmark, if you modify the "GET" test in src/redis-benchmark.c so that they key is just "foo", you can run the short key test after a make install:
diff --git a/src/redis-benchmark.c b/src/redis-benchmark.c
--- a/src/redis-benchmark.c
+++ b/src/redis-benchm...
How to evaluate http response codes from bash/shell script?
...
I haven't tested this on a 500 code, but it works on others like 200, 302 and 404.
response=$(curl --write-out '%{http_code}' --silent --output /dev/null servername)
Note, format provided for --write-out should be quoted.
As suggested...
How to change context root of a dynamic web project in Eclipse?
... In this case, we should see a folder named app. You should be good to go. Test your URL. For a domain such as *example.com" this would be:
http://www.example.com/app/
Vaadin toolkit programmers may need to rebuild their widget set if using visual add ons.
...
Is Task.Result the same as .GetAwaiter.GetResult()?
...
@JayBazuzi Not if your unit testing framework supports async unit tests, which I think newest versions of most frameworks do.
– svick
Jun 24 '13 at 20:52
...