大约有 23,000 项符合查询结果(耗时:0.0364秒) [XML]

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Tainted canvases may not be exported

...ble-area")[0], { useCORS:true}).then(function (canvas){ var imgBase64 = canvas.toDataURL(); // console.log("imgBase64:", imgBase64); var imgURL = "data:image/" + imgBase64; var triggerDownload = $("<a>").attr("href", imgURL).attr("download", "layout_"+new Date()...
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What's the best way to set a single pixel in an HTML5 canvas?

...ng drawImage() to show it: var img = new Image; img.src = "data:image/png;base64," + myPNGEncoder(r,g,b,a); // Writing the PNGEncoder is left as an exercise for the reader creating another img or canvas filled with all the pixels you want and use drawImage() to blit just the pixel you want across....
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Version of Apache installed on a Debian machine

... Worked fine on Red Hat Enterprise Linux 6 (64-bit) – DemiSheep Jan 26 '16 at 16:49  |  show 6 more comments ...
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REST Complex/Composite/Nested Resources [closed]

...m trying to wrap my head around the best way to address concepts in a REST based API. Flat resources that don't contain other resources are no problem. Where I'm running into trouble are the complex resources. ...
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How to get past the login page with Wget?

... Based on the manual page: # Log in to the server. This only needs to be done once. wget --save-cookies cookies.txt \ --keep-session-cookies \ --post-data 'user=foo&password=bar' \ --delete-after \ ht...
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PDO MySQL: Use PDO::ATTR_EMULATE_PREPARES or not?

...uing a plain textual query using emulated prepared statements. On many database systems the query plan for a prepare() is cached as well and may be shared with multiple connections, but I don't think MySQL does this. So if you do not reuse your prepared statement object for multiple queries your ove...
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Text editor to open big (giant, huge, large) text files [closed]

...as a powerful, versatile tool that provides universal query access to text-based data such as log files, XML files and CSV files, as well as key data sources on the Windows operating system such as the Event Log, the Registry, the file system, and Active Directory. The results of the input query can...
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搭建高可用mongodb集群(二)—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...

...装程序包 wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.8.tgz 注意linux生产环境不能安装32位的mongodb,因为32位受限于操作系统最大2G的文件限制。 #解压下载的压缩包 tar xvzf mongodb-linux-x86_64-2.4.8.tgz 4、分别在每...
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Setting an int to Infinity in C++

...:numeric_limits<int>::max(); Which would be 2^31 - 1 (or 2 147 483 647) if int is 32 bits wide on your implementation. If you really need infinity, use a floating point number type, like float or double. You can then get infinity with: double a = std::numeric_limits<double>::infinity...
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What can you do in MSIL that you cannot do in C# or VB.NET? [closed]

...RecursiveMethod(int myParameter) { // Body of recursive method if (BaseCase(details)) return result; // ... return RecursiveMethod(modifiedParameter); } // Is transformed into: private static int RecursiveMethod(int myParameter) { while (true) { // Body of ...