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How to return 2 values from a Java method?
I am trying to return 2 values from a Java method but I get these errors. Here is my code:
14 Answers
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ipython notebook clear cell output in code
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You can use IPython.display.clear_output to clear the output of a cell.
from IPython.display import clear_output
for i in range(10):
clear_output(wait=True)
print("Hello World!")
At the end of this loop you will only see one Hello World!.
Without a code example it's not easy to give y...
How to print out more than 20 items (documents) in MongoDB's shell?
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From the shell if you want to show all results you could do db.collection.find().toArray() to get all results without it.
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Java Replacing multiple different substring in a string at once (or in the most efficient way)
...ges frequently).
Below is a full example, based on a list of tokens taken from a map. (Uses StringUtils from Apache Commons Lang).
Map<String,String> tokens = new HashMap<String,String>();
tokens.put("cat", "Garfield");
tokens.put("beverage", "coffee");
String template = "%cat% really...
Capturing “Delete” Keypress with jQuery
When using the example code from the jQuery documentation for the keypress event handler, I'm unable to capture the Delete key. The snippet below is going to log 0 when the Delete key is pressed in FireFox:
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Get all child views inside LinearLayout at once
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Get all views from any type of layout
public List<View> getAllViews(ViewGroup layout){
List<View> views = new ArrayList<>();
for(int i =0; i< layout.getChildCount(); i++){
views.add(layout....
Can't subtract offset-naive and offset-aware datetimes
... have a timezone aware timestamptz field in PostgreSQL. When I pull data from the table, I then want to subtract the time right now so I can get it's age.
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How does one write code that best utilizes the CPU cache to improve performance?
...ansfered (preserving memory bandwidth).
Techniques for avoiding suffering from memory fetch latency is typically the first thing to consider, and sometimes helps a long way. The limited memory bandwidth is also a limiting factor, particularly for multicores and multithreaded applications where many...
What is the runtime performance cost of a Docker container?
...g nothing but floating-point performance as performed). The major overhead from KVM is in the userspace hardware emulation components (which only apply to non-CPU hardware); there's significant overhead around memory paging... but raw floating-point? I'd want to look at what was actually going on th...
How to convert the ^M linebreak to 'normal' linebreak in a file opened in vim?
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From all the solutions offered on this page, this was the only pattern that worked for me in removing ^M from a csv file. Using MacVim.
– B6431
May 21 '14 at 15:45
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