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What does it mean that Javascript is a prototype based language?
...irectly from other objects. All of the business about classes goes away. If you want an object, you just write an object. But code reuse is still a valuable thing, so objects are allowed to be linked together in a hierarchy. In javascript, every object has a secret link to the object which creat...
No Persistence provider for EntityManager named
...
I am using Derby and it wasn't necessary to specify this (I did, but then removed it once I solved the problem, just to make sure). I was getting the error finally because persistence.xml was not in the src/META-INF folder, even though it had been in a folder in the Eclips...
How to query MongoDB with “like”?
...
Actually, it depends. If the query doesn't use an index, and must do a table scan, then it can certainly be expensive. If you're doing a 'starts with' regex query, then that can use an index. Best to run an explain() to see what's happening.
...
Is it possible to set async:false to $.getJSON call
...before your json ajax call. And you can set it to true after call retuns ( if there are other usages of ajax on page if you want them async )
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fo...
The Definitive C++ Book Guide and List
...hing in the language in a very accessible format and in great detail. The fifth edition (released August 16, 2012) covers C++11. [Review]
* Not to be confused with C++ Primer Plus (Stephen Prata), with a significantly less favorable review.
Programming: Principles and Practice Using C++ (Bjarne Str...
How to print the values of slices
... can try the %v, %+v or %#v verbs of go fmt:
fmt.Printf("%v", projects)
If your array (or here slice) contains struct (like Project), you will see their details.
For more precision, you can use %#v to print the object using Go-syntax, as for a literal:
%v the value in a default format.
when...
手机测高仪 · App Inventor 2 中文网
... false
when 方向传感器1.OrientationChanged(azimuth, pitch, roll) {
if not (已锁定) {
当前仰角 = abs(pitch)
标签_角度.Text = join("当前仰角：", round(当前仰角), "°")
}
}
方向改变时 这个事件，只要手机一动就会触发，数字会实时跳。
这...
Find when a file was deleted in Git
...t log --full-history -- [file path] shows the changes of a file, work even if the file was deleted.
Example:
git log --full-history -- myfile
If you want to see only the last commit, which deleted a file use -1 in addition, e.g., git log --full-history -1 -- [file path]
See Which commit delet...
What's the correct way to sort Python `import x` and `from x import y` statements?
...chable. After all python is all about readability.
Also It is easier to verify that something is imported, and avoids duplicated imports
There is nothing available in PEP 8 regarding sorting.So its all about choice what you use.
According to few references from reputable sites and repositories als...
GPU Emulator for CUDA programming without the hardware [closed]
...'ve failed to emulate GPU after all.
It might be possible to use gpuocelot if you satisfy its list of
dependencies.
I've tried to get an emulator for BunsenLabs (Linux 3.16.0-4-686-pae #1 SMP
Debian 3.16.7-ckt20-1+deb8u4 (2016-02-29) i686 GNU/Linux).
I'll tell you what I've learnt.
nvcc used ...