大约有 40,000 项符合查询结果（耗时：0.0443秒） [XML]
Custom ImageView with drop shadow
...from Romain Guy's presentation at Devoxx, pdf found here.
Paint mShadow = new Paint();
// radius=10, y-offset=2, color=black
mShadow.setShadowLayer(10.0f, 0.0f, 2.0f, 0xFF000000);
// in onDraw(Canvas)
canvas.drawBitmap(bitmap, 0.0f, 0.0f, mShadow);
Hope this helps.
NOTES
Don't forget for...
Javascript : Send JSON Object with Ajax?
....stringify({name:"John", time:"2pm"}) });
Without jQuery:
var xmlhttp = new XMLHttpRequest(); // new HttpRequest instance
xmlhttp.open("POST", "/json-handler");
xmlhttp.setRequestHeader("Content-Type", "application/json");
xmlhttp.send(JSON.stringify({name:"John Rambo", time:"2pm"}));
...
Using Kafka as a (CQRS) Eventstore. Good idea?
...
@Jay: Since I have renewed interest in this topic, could you please elaborate a bit on the fact that Kafka seems to be designed to have it's published messages expire after a set period of time? If using Kafka as an eventsource, messages should b...
How can I determine if a JavaScript variable is defined in a page? [duplicate]
...
SSharmaSSharma
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...
Android ViewPager with bottom dots
... You want to use com.google.android.material.tabs.TabLayout in newer Versions
– schlenger
Mar 7 '19 at 15:50
2
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process.waitFor() never returns
...his is to re-direct the errors to the regular output.
ProcessBuilder pb = new ProcessBuilder("tasklist");
pb.redirectErrorStream(true);
Process process = pb.start();
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readL...
Add a reference column migration in Rails 4
...ails 4.x
When you already have users and uploads tables and wish to add a new relationship between them.
All you need to do is: just generate a migration using the following command:
rails g migration AddUserToUploads user:references
Which will create a migration file as:
class AddUserToUpload...
JPA EntityManager: Why use persist() over merge()?
EntityManager.merge() can insert new objects and update existing ones.
15 Answers
15
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The object cannot be deleted because it was not found in the ObjectStateManager
...
If like me, you've got code in a format like this:
using (var context = new MyDataContext())
{
context.MyTableEntity.Remove(EntytyToRemove);
var nrOfObjectsChanged = context.SaveChanges();
}
..then this what you want to do:
using (var context = new MyDataContext())
{
// Note: Attat...
How to ALTER multiple columns at once in SQL Server
...@KM One problem is if you are altering a big table. Each statement means a new scan but if you could alter multiple columns, all altering could have been much quicker
– erikkallen
Sep 8 '16 at 6:31
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