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Specifying colClasses in the read.csv
... the read.csv function in R. In my data, the first column "time" is basically a character vector while the rest of the columns are numeric.
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Java: Multiple class declarations in one file
...here's an official term for this approach though.
As for whether this actually changes between implementations - I highly doubt it, but if you avoid doing it in the first place, you'll never need to care :)
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Why are you not able to declare a class as static in Java?
...This method doesn't work
public static InnerClass getAnInnerClassStatically(){
return new InnerClass();
}
}
class OtherClass{
//Use of a static nested class:
private OuterClass.StaticNestedClass staticNestedClass = new OuterClass.StaticNestedClass();
//Doesn't work
...
Why aren't variable-length arrays part of the C++ standard?
...agree that having to create a potential large array on the stack, which usually has only little space available, isn't good. The argument is, if you know the size beforehand, you can use a static array. And if you don't know the size beforehand, you will write unsafe code.
C99 VLAs could provide a...
add column to mysql table if it does not exist
...
OK this is really crude but someone's got to say it. if you are simply running a SQL script from the command line, you can give mysql the --force switch, which means keep going even if there's an error. then, just go for it. you just want...
Best way to store password in database [closed]
...d thing you are thinking about this and it is a good question, this is actually a duplicate of these questions (at least):
How to best store user information and user login and password
Best practices for storing database passwords
Salting Your Password: Best Practices?
Is it ever ok to store pass...
How to export plots from matplotlib with transparent background?
...Matplotlib so as to save you graph as a png file.
And if you want to turn all white pixel transparent, there's this other question : Using PIL to make all white pixels transparent?
If you want to turn an entire area to transparent, then there's this question: And then use the PIL library like in t...
Installing Java on OS X 10.9 (Mavericks)
I have installed the JDK on Mac OS X v10.8 (Mountain Lion). When I upgraded it to Mac OS X v10.9 (Mavericks) and ran java -version in the terminal, it showed:
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How do I make and use a Queue in Objective-C?
...ject != nil) {
[[headObject retain] autorelease]; // so it isn't dealloc'ed on remove
[self removeObjectAtIndex:0];
}
return headObject;
}
// Add to the tail of the queue (no one likes it when people cut in line!)
- (void) enqueue:(id)anObject {
[self addObject:anObject]...
How to switch to the new browser window, which opens after click on the button?
...ose() closes both windows. It only closes the current. driver.quit() kills all instances. I can see somebody already pointed this out to you. Your comment is full of mistakes. Have a good day.
– silver
Aug 28 '17 at 18:12
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