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What is a good Java library to zip/unzip files? [closed]
... zipFile.setPassword(password);
}
zipFile.extractAll(destination);
} catch (ZipException e) {
e.printStackTrace();
}
}
The Maven dependency is:
<dependency>
<groupId>net.lingala.zip4j</groupId>
<artifactId>zip4j</artifac...
Rails “validates_uniqueness_of” Case Sensitivity
...rvers/server processes (e.g. running Phusion Passenger, multiple Mongrels, etc) or a multi-threaded server. That's because you might get this sequence of events (the order is important):
Process A gets a request to create a new user with the name 'foo'
Process B does the same thing
Process A vali...
Difference between Document-based and Key/Value-based databases?
...ll be store in a format that the database can
understand (i.e. JSON, XML etc). In most doc dbs, that means that we
can now allow queries on the document data.
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Solving “The ObjectContext instance has been disposed and can no longer be used for operations that
...creates proxy class for your entity and overrides navigation properties to allow lazy-loading. E.g. if you have this entity:
public class MemberLoan
{
public string LoandProviderCode { get; set; }
public virtual Membership Membership { get; set; }
}
Entity Framework will return proxy inheri...
Print second last column/field in awk
...
As a mnemonic, this behavior is the same as C/Java etc. int x = ++i int x = i++, prefix means increment first; postfix means increment later (assignment first).
– Weekend
Dec 11 '19 at 7:20
...
Extract only right most n letters from a string
...the end of the string, that's definitely the most painless solution, especially when the number of digits may vary in some later software upgrade.
– Joey
Nov 12 '09 at 14:10
2
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Difference between pre-increment and post-increment in a loop?
...ser defined type with an overridden ++ operator. For primitive types (int, etc) there's no performance difference. But, it's worth sticking to the pre-increment operator as a guideline unless the post-increment operator is definitely what's required.
There's some more discussion here.
In C++ if you'...
How does Facebook Sharer select Images and other metadata when sharing my URL?
...of 3:1, and in PNG, JPEG or GIF format.
Can I specify multiple images to allow the user to select an image?
Yes, you just need to add multiple image meta tags in the order you want them to appear in. The user will then be presented with an image selector dialog:
I specified the appropriate imag...
Can a C++ enum class have methods?
...nt, type_traits dependent code will not work, so e.g. one cannot use auto, etc. There may be some way of handling such stuff, but in the end one is converting an enum into a class, and it is always a mistake to subvert C++
the enum struct and enum class specifications are about scoping so not part...
Finding child element of parent pure javascript
...esire.
Edit: Now that I think about it, you could just use querySelectorAll to get decendents of parent having a class name of child1:
children = document.querySelectorAll('.parent .child1');
The difference between qS and qSA is that the latter returns all elements matching the selector, while...