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How to store custom objects in NSUserDefaults
...g from NSUserDefaults:
- (void)saveCustomObject:(MyObject *)object key:(NSString *)key {
NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:object];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:encodedObject forKey:key];
[def...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
... dirty checking. Suppose the following
public class Person {
private String name;
private Integer age;
}
public class PersonServiceImpl implements PersonService {
public void changeAge(Integer personId, Integer newAge) {
Person person = em.getReference(Person.class, personI...
How do you uninstall MySQL from Mac OS X?
...empt to install from source.
./configure --prefix=/usr/local/mysql --with-extra-charsets=complex \
--enable-thread-safe-client --enable-local-infile --enable-shared \
--with-plugins=innobase
share
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...
What's the difference between ContentControl and ContentPresenter?
...r but if you want in your ControlTemplate another container you can put an extra Container: ContentControl in it and for presenting the content a separate ContentPresenter. If you dont need a separate container then just use ControlTemplate and ControlPresenters for displaying content blocks at leas...
Using Node.js only vs. using Node.js with Apache/Nginx
...
An extra: It is important also if you need a Reverse Proxy, for example to execute a Websocket Server on the same port, or maybe mix some techonlogies (reply with NodeJS some requests and with PHP some others or whatever)
...
How to check edittext's text is email address or not?
...an true for valid false for invalid
*/
public static boolean isEmailValid(String email) {
String expression = "^[\\w\\.-]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";
Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(email);
return matcher.m...
How to parse JSON in Java
... org.json library is easy to use. Example code below:
import org.json.*;
String jsonString = ... ; //assign your JSON String here
JSONObject obj = new JSONObject(jsonString);
String pageName = obj.getJSONObject("pageInfo").getString("pageName");
JSONArray arr = obj.getJSONArray("posts");
for (int...
How to use Git properly with Xcode?
...ct files, having the same effect as the script I provided only without any extra work.
Lastly, here is my complete .gitignore file, showing what I do have it set to ignore as there are a few things you don't want - in my case really just emacs remnants and the whole build directory:
# xcode noise
...
How can I convert this foreach code to Parallel.ForEach?
...
string[] lines = File.ReadAllLines(txtProxyListPath.Text);
List<string> list_lines = new List<string>(lines);
Parallel.ForEach(list_lines, line =>
{
//Your stuff
});
...
Spring Data: “delete by” is supported?
...elete from User u where u.firstName = ?1")
void deleteUsersByFirstName(String firstName);
}
Update:
In modern versions of Spring Data JPA (>=1.7.x) query derivation for delete, remove and count operations is accessible.
public interface UserRepository extends CrudRepository<User, Long&...