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Is there a faster/shorter way to initialize variables in a Rust struct?
...tural" defaults that some languages use such as I believe zero, false, "", etc., would suit me. I do understand that there are wider implications than my small "problem" to solve. Ability to state eg. "iVal : i64 = 0", would solve my wider needs, but I guess that's not going to happen. The "#[derivi...
How to pass all arguments passed to my bash script to a function of mine? [duplicate]
...arentheses make it an array), and then reference them as e.g. "${args[0]}" etc (note that bash array indexes start at 0, so $1 will be in args[0], etc).
Leaving off the double-quotes, with either $@ or $*, will try to split each argument up into separate words (based on whitespace or whatever's in $...
Group By Multiple Columns
...ry helpful. I find the use of an aggregate function (i.e., MAX, MIN, SUM, etc.) side-by-side with grouping to be a common scenario.
– barrypicker
Jan 24 '14 at 18:44
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Get object by id()? [duplicate]
...
@HamidFzM No, not really. If I have an ID, I maybe don't even know whether the object still exists or not.
– glglgl
Jul 21 '14 at 8:13
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Disable Logback in SpringBoot
...-boot-starter-* dependency is a huge hassle. It seems like Gradle at least allows a global exclusion. This alone is seriously making me consider switching from Maven.
– scottysseus
Apr 26 '19 at 20:46
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How to run a background task in a servlet based web application?
...e. a real Java EE server such as WildFly, JBoss, TomEE, Payara, GlassFish, etc), then use @Schedule instead. Here are some examples:
@Singleton
public class BackgroundJobManager {
@Schedule(hour="0", minute="0", second="0", persistent=false)
public void someDailyJob() {
// Do your ...
How to cast an Object to an int
...t;
Scenario 2: any numerical object
In Java Integer, Long, BigInteger etc. all implement the Number interface which has a method named intValue. Any other custom types with a numerical aspect should also implement Number (for example: Age implements Number). So you can:
int x = ((Number)yourOb...
How to count total lines changed by a specific author in a Git repository?
...--author="<authorname>" --oneline --shortstat
This gives stats for all commits on the current HEAD. If you want to add up stats in other branches you will have to supply them as arguments to git log.
For passing to a script, removing even the "oneline" format can be done with an empty log f...
Rank function in MySQL
... (SELECT @curRank := 0) r
ORDER BY age;
The (SELECT @curRank := 0) part allows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT I...
MongoDB Aggregation: How to get total records count?
...sults simultaneously in single query. I can't explain how I felt when I finally achieved it LOL.
$result = $collection->aggregate(array(
array('$match' => $document),
array('$group' => array('_id' => '$book_id', 'date' => array('$max' => '$book_viewed'), 'views' => array('...