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Where does Java's String constant pool live, the heap or the stack?
I know the concept of a constants pool and the String constant pool used by JVMs to handle String literals. But I don't know which type of memory is used by the JVM to store String constant literals. The stack or the heap? Since its a literal which is not associated with any instance I would assume ...
Search and replace in Vim across all the project files
...his in two simple commands using whatever grep tool you have installed. No extra plugins required!:
1. :grep <search term>
2. :cdo %s/<search term>/<replace term>/gc
3. (If you want to save the changes in all files) :cdo update
(cdo executes the given command to each term in the...
Deserializing a JSON into a JavaScript object
I have a string in a Java server application that is accessed using AJAX. It looks something like the following:
8 Answers
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Compare if two variables reference the same object in python
...ng to do with the object itself. It's easy to have immuteable objects like strings that are equal but not stored at the same location, for example ''a'*10000 is 'a' * 10000 is False.
– Jochen Ritzel
Apr 10 '17 at 13:43
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Installing Java 7 on Ubuntu
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this is the simplest solution, and doesn't involve adding extra repos.
– steve cook
May 18 '14 at 4:58
2
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Split array into chunks
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The array.slice method can extract a slice from the beginning, middle, or end of an array for whatever purposes you require, without changing the original array.
var i,j,temparray,chunk = 10;
for (i=0,j=array.length; i<j; i+=chunk) {
temparray ...
Show compose SMS view in Android
...
});
}
//Sends an SMS message to another device
private void sendSMS(String phoneNumber, String message) {
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phoneNumber, null, message, null, null);
}
You can add this line in AndroidManifest.xml
<uses-permission androi...
Should you always favor xrange() over range()?
...ter, and a bit more memory efficient. But the gain is not very large.
The extra memory used by a list is of course not just wasted, lists have more functionality (slice, repeat, insert, ...). Exact differences can be found in the documentation. There is no bonehard rule, use what is needed.
Python...
Order a MySQL table by two columns
...t`,
`date` AS `date`,
MATCH (`text`) AGAINST (:string) AS `match`
FROM int_art_fulltext
WHERE MATCH (`text`) AGAINST (:string IN BOOLEAN MODE)
LIMIT 0,101
) t,
(
SELECT @row := 0
) r
ORD...
What is the difference between -viewWillAppear: and -viewDidAppear:?
...ke a long time to execute, like for example doing a webservice call to get extra data for the form above.The good thing is that because the view already exists and is being displayed to the user, you can show a nice "Waiting" message to the user while you get the data.
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