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Java - JPA - @Version annotation
...zable {
@Id
@GeneratedValue
private Long id;
private String name;
@Version
private Long version;
//...
}
On update, the field annotated with @Version will be incremented and added to the WHERE clause, something like this:
UPDATE MYENTITY SET ..., VERSION = VERS...
Custom toast on Android: a simple example
...e Java method (just pass toast message to this method):
public void toast(String message)
{
Toast toast = new Toast(context);
View view = LayoutInflater.from(context).inflate(R.layout.image_custom, null);
TextView textView = (TextView) view.findViewById(R.id.custom_toast_text);
text...
How to wrap async function calls into a sync function in Node.js or Javascript?
...sole.log(res);
});
}
I like arrow function definitions more. But any string of the form "() => {...}" could also be written as "function () {...}"
So topDog is not async despite calling an async function.
EDIT: I realize a lot of the times you need to wrap an async function inside a syn...
Spring @PostConstruct vs. init-method attribute
...ts InitializingBean {
@Value("${mycomponent.value:Magic}")
public String value;
public MyComponent() {
log.info("MyComponent in constructor: [{}]", value); // (0) displays: Null
}
@PostConstruct
public void postConstruct() {
log.info("MyComponent in postCon...
Best ways to teach a beginner to program? [closed]
...nd gaze into the Abyss. Start by writing a circular buffer and a stack for string manipulation. Then work your way up.
share
edited Mar 28 '12 at 19:16
...
Fast way of counting non-zero bits in positive integer
...der to understand how this works imagine that you divide the entire 64-bit string into 64 1-bit buckets. Each bucket's value is equal to the number of bits set in the bucket (0 if no bits are set and 1 if one bit is set). The first transformation results in an analogous state, but with 32 buckets ea...
Android - shadow on text?
... TextView item = new TextView(getApplicationContext());
item.setText(R.string.text);
item.setTextColor(getResources().getColor(R.color.general_text_color));
item.setShadowLayer(0.01f, -2, 2, getResources().getColor(R.color.text_shadow_color));
...
What is meant by “managed” vs “unmanaged” resources in .NET?
...e your code thusly:
using (var connection = new SqlConnection("connection_string_here"))
{
// Code to use connection here
}
As this ensures that .Dispose() is called on the connection object, ensuring that any unmanaged resources are cleaned up.
...
How is OAuth 2 different from OAuth 1?
... API, which didn't require the application to HMAC hash tokens and request strings. With OAuth 2.0, the application can make a request using only the issued token over HTTPS.
OAuth 2.0 signatures are much less complicated. No more special parsing, sorting, or encoding.
OAuth 2.0 Access tokens are...
What is the most efficient Java Collections library? [closed]
...
Not sure if we don't use int as key,just normal String. What will be the workbench result for them?
– Clark Bao
Aug 14 '11 at 2:18
...