size

I read in multiple places that the default buffer size for a pipe is 4kB (for instance, here ), and my ulimit -a tends to confirm that statement: $ ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 15923 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 // 8 * 512B = 4kB POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 10240 cpu time (seconds, -t) unlimited max user processes

This question already has an answer here: Android splash screen image sizes to fit all devices 9 answers I have a background that I need fit in all screen sizes. I have three folders, hdpi , ldpi and mdpi for drawables, but in the emulator there isn't any referense to what resolution hdpi is and what mdpi and ldpi are. evilone You should read Supporting multiple screens . You must define dpi on your emulator. 240 is hdpi, 160 is mdpi and below that are usually ldpi. Extract from Android Developer Guide link above: 320dp: a typical phone screen (240x320 ldpi, 320x480 mdpi, 480x800 hdpi, etc).

Heap简介 　　 Heap译为“堆”，是一种特殊的树形数据结构，它满足所有堆的特性：父节点的值大于等于子节点的值(max heap)，或者小于等于子节点的值(min heap)。对于max heap 根节点的值为整个树最大值，反之亦然，min heap 根节点的值为整个树最小值。本文采用Java编程语言简单实现min heap。 Java Heap 　　对于大多数应用来说，Java堆 (Java Heap) 是Java虚拟机所管理的内存中最大的一块。Java堆是被所有线程共享的一块内存区域，在虚拟机启动时创建。此内存区域的唯一目的就是存放对象实例，几乎所有的对象实例都在这里分配内存。根据Java虚拟机规范的规定，Java堆可以处于物理上不连续的内存空间中，只要逻辑上是连续的即可，就像我们的磁盘空间一样。如果在堆中没有内存完成实例分配，并且堆也无法再扩展时，将会抛出OutOfMemoryError异常。 结构示意图 min heap max heap 结构转换 　　不像其他的树形结构，例如 二叉查找树 ，采用链表的形式实现，Heap一般用数组实现。这种数组采用自上至下，自左至右的形式从树中添加元素。图2-2展示了如何把图2-1树形结构(不是Heap数据结构)存储到数组中。箭头指向数组中每个元素的直接左孩子和右孩子。 　　 　　　　　　　　　　　　　　 　 图2-1 　　　　　　　　

After fiddling with point size options in ggplot2, I noticed examples in which size was passed both inside and outside the aes() parameter of geom_point() . From the `geom_point() page on Hadley's site : p <- ggplot(mtcars, aes(wt, mpg)) # passed inside p + geom_point(aes(size = qsec)) p + geom_point(aes(size = qsec)) + scale_area() # passed outside p + geom_point(colour = "red", size = 3) p + geom_point(colour = "grey50", size = 4) I've found these behave differently when it comes to legends. When passing inside aes() I can get a legend to appear, though I need to set breaks even though I