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Logstash实践: 分布式系统的日志监控 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...了发布者和订阅者之间的耦合。举个例子，一个Indexer在持续读取Redis中的记录，现在想加入第二个Indexer，如果使用list，就会出现上一条记录被第一个Indexer取走，而下一条记录被第二个Indexer取走的情况，两个Indexer之间产生了竞...
How to screenshot website in JavaScript client-side / how Google did it? (no need to access HDD) [du
...g it up a little (*) and then sending it to the server where I run wkhtmltopdf against it.
This is working very well for me.
(*) various input devices in my pages didn't render as checked or have their text values when viewed in the pdf... So I run a little bit of jQuery on the html before I send...
Abusing the algebra of algebraic data types - why does this work?
...icularly as a jumping-off point into things like strictlypositive.org/diff.pdf
– acfoltzer
Feb 8 '12 at 17:56
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How to elegantly deal with timezones
...h that I can see is when you are using the time for other things, creating pdf's, emails and such, there is not time element for those so you will still have to convert those manually. Otherwise, very neat solution
– shenku
Mar 4 '14 at 0:17
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What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
... I don't think BMP is a 'wrapper' format in the way that TIFF is (or PDF is for that amtter), nor that it can be compressed (I mean, you can ZIP it, but it doesn't contain compressed data).
– ChrisW
Jan 7 '09 at 14:01
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SensorUtil 传感器工具扩展：在后台和屏幕关闭时保持传感器工作 · App Inv...
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Android 限制后台应用的活动以节省电池。要在后台持续运行，应用必须启动前台服务。前台服务会在状态栏显示通知，告知用户应用正在后台运行。
传感器生命周期
App Inventor 的传感器组件在 onPause 事...
泰迪熊为什么叫泰迪 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...当时的美国总统老罗斯福前往密西西比解决路易斯安那州与密西西比州的边界争端。原本是美国副总统的老罗斯福，由于总统被刺补登总统之位一年有余。此行他还受密西西比州长之邀，参加了一次题外的狩猎活动，这是泰迪熊...
Popup弹出菜单扩展 · App Inventor 2 中文网
...这里只评估第一个字母。大小写不重要。例如，”False”与”f”同义，”true”与”T”同义。除了”t”或”f”之外的字符被忽略，即不显示复选框。
其他设置
MenuFontSize定义整个菜单的菜单项文本大小，MenuText...
Popup弹出菜单扩展 · App Inventor 2 中文网
...这里只评估第一个字母。大小写不重要。例如，”False”与”f”同义，”true”与”T”同义。除了”t”或”f”之外的字符被忽略，即不显示复选框。
其他设置
MenuFontSize定义整个菜单的菜单项文本大小，MenuText...
SVG图像加载扩展 - 第三方扩展集合 · App Inventor 2 中文网
...设置指定SVG元素的透明度。
动画元素(元素ID,动画类型,持续时间)
为指定SVG元素添加动画效果。
添加点击处理(元素ID)
为指定SVG元素添加点击事件处理。
获取元素边界(元素ID)
获取指定SVG元素的边界矩形。
导出为PNG...