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File Hash 扩展：文件哈希计算和 Base64 编码文件，sha256、sha512 哈希 ·...
... 搜索 File Hash 扩展：文件哈希计算和 Base64 编码文件，sha256、sha512 哈希
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Get array of object's keys
I would like to get the keys of a JavaScript object as an array, either in jQuery or pure JavaScript.
7 Answers
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Get JSON object from URL
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$json = file_get_contents('url_here');
$obj = json_decode($json);
echo $obj->access_token;
For this to work, file_get_contents requires that allow_url_fopen is enabled. This can be done at runtime by including:
ini_set("allow_u...
Android and setting alpha for (image) view alpha
...eView.setAlpha(int) documentation. The alternative is to use View.setAlpha(float) whose XML counterpart is android:alpha. It takes a range of 0.0 to 1.0 instead of 0 to 255. Use it e.g. like
<ImageView android:alpha="0.4">
However, the latter in available only since API level 11.
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使用 XML 和 Web 服务 · App Inventor 2 中文网
...tDecode takes a given XML text string and decodes it to produce a list. If the text is not well-formed XML, it will signal an error and return the empty list.
The list returned by XMLTextDecode contains one pair for each top-level tag-delimited structure in the input string. For example, decodi...
Convert an image (selected by path) to base64 string
How do you convert an image from a path on the user's computer to a base64 string in C#?
12 Answers
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File tree view in Notepad++
I was wondering how to make a file tree view in Notepad++, like other editors have, where I could open a file by clicking on it?
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/usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.15' not found
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I'm compiling gcc 4.6 from source, and apparently
sudo make install
didn't catch this one. I dug around and found
gcc/trunk/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6.0.15
I copied it in to /usr/lib and redirected libstd...
Context switches much slower in new linux kernels
We are looking to upgrade the OS on our servers from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS. Unfortunately, it seems that the latency to run a thread that has become runnable has significantly increased from the 2.6 kernel to the 3.2 kernel. In fact the latency numbers we are getting are hard to belie...
How do you Force Garbage Collection from the Shell?
So I am looking at a heap with jmap on a remote box and I want to force garbage collection on it. How do you do this without popping into jvisualvm or jconsole and friends?
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