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What is the difference D3 datum vs. data?
...below or in this Fiddle.
const data = [1,2,3,4,5];
const el = d3.select('#root');
el
.append('div')
.classed('a', true)
.datum(data)
.text(d => `node => data: ${d}`);
const join= el
.selectAll('div.b')
.data(data);
join
.enter()
.append('div')
.classed('b', true)
.text((d, i) =>...
How do you prevent IDisposable from spreading to all your classes?
...concurrently but not the other ones. Think of what should be the aggregate root. In this case it should be Bus, IMHO, although i'm unfamiliar with the domain. So, in that case, the bus should contain the waithandle and all operations against the bus and all it 's children will be synchronized.
...
How to SSH to a VirtualBox guest externally through a host? [closed]
...255.255.255.0
# reboot
Configure ssh service (administering) to login as root (not adviced)
Check if ssh is enabled
# svcs -a | grep ssh
online 15:29:57 svc:/network/ssh:default
Modify /etc/ssh/sshd_config so there is
PermitRootLogin yes
Restart ssh service
svcadm restart ssh
Fro...
Provide an image for WhatsApp link sharing
...m/image.png" />
or starting out with a slash (if the image is in the root directory):
<meta property="og:image" content="/image.png" />
(I would have added this as a comment, but I'm not allowed to yet. Moderators feel free to move this if more appropriate.)
...
How to get distinct values for non-key column fields in Laravel?
...er (you can use it, but you shouldn't use it). You should use distinct. In MySQL you can use DISTINCT for a column and add more columns to the resultset: "SELECT DISTINCT name, id, email FROM users". With eloquent you can do this with $this->select(['name', 'id', 'email'])->distinct()->get(...
What is a NullPointerException, and how do I fix it?
...y JVM Dynamically
Now Java 14 has added a new language feature to show the root cause of NullPointerException. This language feature has been part of SAP commercial JVM since 2006. The following is 2 minutes read to understand this amazing language feature.
https://jfeatures.com/blog/NullPointerExce...
Remove refs/original/heads/master from git repo after filter-branch --tree-filter?
I had the same question as asked here: New git repository in root directory to subsume an exist repository in a sub-directory
...
Apache is downloading php files instead of displaying them
...lation of modules like,
sudo apt-get install libapache2-mod-php7.0 php7.0-mysql php7.0-curl php7.0-json
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Passing an array to a query using a WHERE clause
...tatement = $pdo->prepare($select);
$statement->execute($ids);
Using MySQLi [2]
$in = join(',', array_fill(0, count($ids), '?'));
$select = <<<SQL
SELECT *
FROM galleries
WHERE id IN ($in);
SQL;
$statement = $mysqli->prepare($select);
$statement->bind_param(str_repea...
How do I get a plist as a Dictionary in Swift?
...rmat of your .plist file. For this example I will consider a .plist with a root level Dictionary and 3 entries: 1 String with key "name", 1 Int with key "age", and 1 Boolean with key "single". Here is the struct:
struct Config: Decodable {
private enum CodingKeys: String, CodingKey {
ca...