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Specifying an Index (Non-Unique Key) Using JPA
...lass Region{
@Column(name = "iso_code", nullable = false)
private String isoCode;
@Column(name = "name", nullable = false)
private String name;
}
Update: If you ever need to create and index with two or more columns you may use commas. For example:
@Entity
@Table(name = "co...
No ConcurrentList in .Net 4.0?
...ent access. E.g. the following is not atomic var l = new ConcurrentList<string>(); /* ... */ l[0] += "asdf";. In general, any read-write combo can lead you into deep trouble when done concurrently. That is why concurrent data structures generally provide methods for those, like ConcurrentDicti...
django urls without a trailing slash do not redirect
... request.path = request.path + '/'
# we don't need query string in path_info because it's in request.GET already
request.path_info = request.path
response = self.handler.get_response(request)
return response
...
What is the difference between an annotated and unannotated tag?
...release without making a release commit.
Lightweight tags don't have that extra information, and don't need it, since you are only going to use it yourself to develop.
git push --follow-tags will only push annotated tags
git describe without command line options only sees annotated tags
Internals...
Which are more performant, CTE or temporary tables?
...atistics.
Test Data
CREATE TABLE T(A INT IDENTITY PRIMARY KEY, B INT , F CHAR(8000) NULL);
INSERT INTO T(B)
SELECT TOP (1000000) 0 + CAST(NEWID() AS BINARY(4))
FROM master..spt_values v1,
master..spt_values v2;
Example 1
WITH CTE1 AS
(
SELECT A,
ABS(B) AS Abs_B,
F
FROM T
)
...
How to round an image with Glide library?
...Circle(r, r, r, paint);
return result;
}
@Override public String getId() {
return getClass().getName();
}
}
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follo...
Copy data into another table
...o you're welcome to put anything in it you want, including explicit NULLs, string constants, expressions, or even subqueries.
– lc.
Dec 11 '15 at 11:10
...
How to display the default iOS 6 share action sheet with available share options?
... applicable sharing services. Examples:
Objective-C
- (void)shareText:(NSString *)text andImage:(UIImage *)image andUrl:(URL *)url
{
NSMutableArray *sharingItems = [NSMutableArray new];
if (text) {
[sharingItems addObject:text];
}
if (image) {
[sharingItems addObje...
How can I force division to be floating point? Division keeps rounding down to 0?
... b might be something other than an integer or floating-point number (or a string representing one). If you might be dealing with other types (such as complex numbers) you'll need to either check for those or use a different method.
...
Change limit for “Mysql Row size too large”
...rows of your
tables plus the length of other variable length fields (VARCHAR, VARBINARY, and TEXT type fields).
In my situation the offending blob table was around 16MB. Thus, the way I solved it was by adding a line to my.cnf that ensured I had at least 10x that amount and then some:
innodb_l...