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What is a NullPointerException, and how do I fix it?
...is appropriate to throw the NullPointerException because it's a programmer error and the programmer will need that information for debugging purposes. Please include the name of the object variable in the exception message, like
Objects.requireNonNull(a, "a");
Alternatively, there may be cases whe...
Catching multiple exception types in one catch block
I'd like a cleaner way to obtain the following functionality, to catch AError and BError in one block:
11 Answers
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How much faster is Redis than mongoDB?
...a disk sync, but for network replication before returning. Not waiting for errors is something never done on prod. like not detecting if the network cable is connected when writing to the network.
– sivann
Jan 17 '13 at 22:05
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Parallelize Bash script with maximum number of processes
...
With GNU Parallel http://www.gnu.org/software/parallel/ you can write:
some-command | parallel do-something
GNU Parallel also supports running jobs on remote computers. This will run one per CPU core on the remote computers - even if ...
How to swap files between windows in VIM?
...agement without destroying and recreating windows. The swap buffers script allows these use cases.
– bobpaul
Oct 12 '11 at 21:10
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Github: error cloning my private repository
...rying to clone my GitHub project using the https-URL, but it fails with an error:
24 Answers
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Performance surprise with “as” and nullable types
...lable types, and I'm adding a section about using the "as" operator, which allows you to write:
10 Answers
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Why is the shovel operator (
...ut who has to clean the glass and more about the number of glasses used at all. You could imagine that certain applications are pushing the limits of memory on their machines and that those machines can only clean a certain number of glasses at a time.
– Charlie L
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How to include *.so library in Android Studio?
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Solution 2 doesn't work for me. I get a build error: "Could not find property 'jni' on source set 'main'."
– Greg Brown
Mar 14 '16 at 18:14
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How do I create delegates in Objective-C?
... didFinishLoadingItem:(id)item;
- (void)something:(id)something didFailWithError:(NSError *)error;
@end
@interface Something : NSObject
@property (nonatomic, weak) id <SomethingDelegate> delegate;
@end
@implementation Something {
struct {
unsigned int didFinishLoadingItem:1;
unsign...