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Java Persistence / JPA: @Column vs @Basic
What is the difference between @Column and @Basic annotations in JPA? Can they be used together? Should they be used together? Or does one of them suffice?
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Escape double quote character in XML
Is there an escape character for a double quote in xml? I want to write a tag like:
8 Answers
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I lost my .keystore file?
... retrieve the source code, but not the .keystore file used to sign and publish my application to the market (with several updates). Am I, and my poor users, out of luck if I ever want to update?
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How to set a cookie for another domain
Say I have a website called a.com , and when a specific page of this site is loaded, say page link, I like to set a cookie for another site called b.com , then redirect the user to b.com .
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How do I tar a directory of files and folders without including the directory itself?
...doesn't expand hidden files by path name expansion at least in bash. Below is my experiment:
$ mkdir my_directory
$ touch my_directory/file1
$ touch my_directory/file2
$ touch my_directory/.hiddenfile1
$ touch my_directory/.hiddenfile2
$ cd my_directory/ && tar -zcvf ../my_dir.tgz . &&a...
Proper REST response for empty table?
Let's say you want to get list of users by calling GET to api/users , but currently the table was truncated so there are no users. What is the proper response for this scenario: 404 or 204 ?
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How do I use a PriorityQueue?
...offer to indicate that the value can't be added due to size limitations, this difference is irrelevant in PriorityQueue which is unbounded.
Here's an example of a priority queue sorting by string length:
// Test.java
import java.util.Comparator;
import java.util.PriorityQueue;
public class Test {
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Python: Select subset from list based on index set
I have several lists having all the same number of entries (each specifying an object property):
5 Answers
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Difference between a class and a module
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The first answer is good and gives some structural answers, but another approach is to think about what you're doing. Modules are about providing methods that you can use across multiple classes - think about them as "libraries" (as you would...
memory_get_peak_usage() with “real usage”
If the real_usage argument is set to true the PHP DOCS say it will get the real size of memory allocated from system. If it's false it will get the memory reported by emalloc()
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