大约有 42,000 项符合查询结果(耗时:0.0400秒) [XML]

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overlay two images in android to set an imageview

... You can skip the complex Canvas manipulation and do this entirely with Drawables, using LayerDrawable. You have one of two choices: You can either define it in XML then simply set the image, or you can configure a LayerDrawable dynamically in code. Solution #1 (via XM...
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C++ Dynamic Shared Library on Linux

...ain(int argc, char **argv) { /* on Linux, use "./myclass.so" */ void* handle = dlopen("myclass.so", RTLD_LAZY); MyClass* (*create)(); void (*destroy)(MyClass*); create = (MyClass* (*)())dlsym(handle, "create_object"); destroy = (void (*)(MyClass*))dlsym(handle, "destroy_object"); My...
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Can someone explain __all__ in Python?

I have been using Python more and more, and I keep seeing the variable __all__ set in different __init__.py files. Can someone explain what this does? ...
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What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?

... Yes. They are different file formats (and their file extensions). Wikipedia entries for each of the formats will give you quite a bit of information: JPEG (or JPG, for the file extension; Joint Photographic Experts Group) PNG (Portable Network Graphics) BMP (B...
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Difference between exit() and sys.exit() in Python

In Python, there are two similarly-named functions, exit() and sys.exit() . What's the difference and when should I use one over the other? ...
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Difference between onCreate() and onStart()? [duplicate]

I was wondering - what is the difference between onCreate() and onStart() methods? 2 Answers ...
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What does “Memory allocated at compile time” really mean?

In programming languages like C and C++, people often refer to static and dynamic memory allocation. I understand the concept but the phrase "All memory was allocated (reserved) during compile time" always confuses me. ...
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What do Clustered and Non clustered index actually mean?

I have a limited exposure to DB and have only used DB as an application programmer. I want to know about Clustered and Non clustered indexes . I googled and what I found was : ...
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How to grep a string in a directory and all its subdirectories? [duplicate]

How to grep a string or a text in a directory and all its subdirectories'files in LINUX ?? 2 Answers ...
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Executing command line programs from within python [duplicate]

...ication that will is going to manipulate (pad, mix, merge etc) sound files and I've found that sox does exactly what I want. Sox is a linux command line program and I'm feeling a little uncomfortable with having the python web app starting new sox processes on my server on a per request basis. ...