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Django - iterate number in for loop of a template
...forloop.counter0 }} # starting index 0
# do your stuff
{% endfor %}
More info at: for | Built-in template tags and filters | Django documentation
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How to create an array of 20 random bytes?
...om();
byte[] bytes = new byte[20];
random.nextBytes(bytes);
Java 8 (even more secure):
byte[] bytes = new byte[20];
SecureRandom.getInstanceStrong().nextBytes(bytes);
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HEAD and ORIG_HEAD in Git
...of HEAD, ORIG_HEAD is last value of HEAD before dangerous operation).
For more information read git(1) manpage, Git User's Manual, the Git Community Book and Git Glossary
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Run cURL commands from Windows console
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This answer needs more upvotes. This is the way to go for users comfortable with mac terminal or unix distributions.
– BigRon
Jan 30 '16 at 19:54
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Any way to replace characters on Swift String?
...backToString = toArray.joined(separator: "+")
Or if you're looking for a more Swifty solution that doesn't utilize API from NSString, you could use this.
let aString = "Some search text"
let replaced = String(aString.map {
$0 == " " ? "+" : $0
})
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How do I serialize a C# anonymous type to a JSON string?
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Print multiple arguments in Python
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My +1. These days I prefer the .format() as more readable than the older % (tuple) -- even though I have seen tests that show the % interpolation is faster. The print('xxx', a, 'yyy', b) is also fine for simple cases. I recommend also to learn .format_map() with dictio...
How can I add a string to the end of each line in Vim?
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JPA EntityManager: Why use persist() over merge()?
...rt the new register to the database.
persist() efficiency:
It could be more efficient for inserting a new register to a database than merge().
It doesn't duplicates the original object.
persist() semantics:
It makes sure that you are inserting and not updating by mistake.
Example:
{
A...