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UIView's frame, bounds, center, origin, when to use what?
...ou most often use for normal iPhone applications. most controls will be laid out relative to the "containing" control so the frame.origin will directly correspond to where the control needs to display, and frame.size will determine how big to make the control.
center - this is the property you w...
What is difference between sjlj vs dwarf vs seh?
I can't find enough information to decide which compiler should I use to compile my project. There are several programs on different computers simulating a process. On Linux, I'm using GCC. Everything is great. I can optimize code, it compiles fast and uses not-so-much memory.
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How to create a new java.io.File in memory?
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"It's not possible" would be a valid answer in my opinion. However i think that an in-memory filesystem (mentioned in the comments of Andreas’ answer) could also be mentioned, because if you cant for some reason write to the hard-drive, then that could be a...
How to make a class conform to a protocol in Swift?
...want to modify the functions in the protocol, you need to add keyword override before the function call, like this
class CustomDataSource : NSObject, UITableViewDataSource {
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let...
Why can't I call read() twice on an open file?
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+1, Yes, please read to temporary variable to avoid unnecessary file I/O. It's a false economy that you're saving any memory because you have fewer (explicit) variables.
– Nick T
Oct 11 '10 at 13:45
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make arrayList.toArray() return more specific types
...te int i;
public Custom(int i) {
this.i = i;
}
@Override
public String toString() {
return String.valueOf(i);
}
}
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Difference between validate(), revalidate() and invalidate() in Swing GUI
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invalidate() marks the container as invalid. Means the content is somehow wrong and must be re-laid out. But it's just a kind of mark/flag. It's possible that multiple invalid containers must be refreshed later.
validate() perfor...
Why does writeObject throw java.io.NotSerializableException and how do I fix it?
...mark the field as transient
if you need its data and it's third party, consider other means of serialization, like JSON, XML, BSON, MessagePack, etc. where you can get 3rd party objects serialized without modifying their definitions.
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How do I create a class instance from a string name in ruby?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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returning a Void object
What is the correct way to return a Void type, when it isn't a primitive? Eg. I currently use null as below.
5 Answers
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