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When to use an interface instead of an abstract class and vice versa?
...ng what an object is.
When we talk about an interface and define capabilities that we promise to provide, we are talking about establishing a contract about what the object can do.
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How to perform better document version control on Excel files and SQL schema files
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Since you've tagged your question with git I assume you are asking about Git usage for this.
Well, SQL dumps are normal text files so it makes perfect sense to track them with Git. Just create a repository and store them in it. When you get a new version of a...
How do I redirect in expressjs while passing some context?
...ion(req, res) {
var passedVariable = req.query.valid;
// Do something with variable
});
For more dynamic way you can use the url core module to generate the query string for you:
const url = require('url');
app.get('/category', function(req, res) {
res.redirect(url.format({
pat...
Is it safe to remove selected keys from map within a range loop?
How can one remove selected keys from a map?
Is it safe to combine delete() with range, as in the code below?
4 Answers
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MySQL maximum memory usage
I would like to know how it is possible to set an upper limit on the amount of memory MySQL uses on a Linux server.
6 Answ...
What C++ Smart Pointer Implementations are available?
...ted a lot of comments about some specific smart pointer implementations so it seemed worth starting a new post.
3 Answers
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Google Chromecast sender error if Chromecast extension is not installed or using incognito
I'm having an error running Chromecast sender in Chrome Incognito or if Chromecast extension is not installed:
5 Answers
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How do I undo 'git add' before commit?
I mistakenly added files to Git using the command:
36 Answers
36
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Nullable Foreign Key bad practice?
Let's say you have a table Orders with a foreign key to a Customer Id. Now, suppose you want to add an Order without a Customer Id, (whether that should be possible is another question) you would have to make the foreign key NULL... Is that bad practice or would you rather work with a link table bet...
How can I clear scrollback buffer in Tmux?
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This same question has been plaguing me for quite some time. Here's the best I've come up with. Put this into your .tmux.conf file:
bind -n C-k clear-history
This binds ctrl-k to the tmux clear-history command. The -n after bind makes it so you don't have to issue ...