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Unable to access sdcard
I\'m trying to read/write files to the sdcard. I\'ve tried doing this both on my real phone and on an emulator in eclipse. On both devices the permission to the /mnt/sdcard/ or /sdcard is only \"d----[详细]
2023-04-03 22:18 分类：问答Why FastCGI is so slow?
Recently I\'ve compared two versions of my C++ application that processes huge files (tens of GBs): a regular executable and fastcgi binary spawned under the lighttpd server. It turned out that fastcg[详细]
2023-04-03 21:20 分类：问答2-way communication with background process (I/O)
I have a program that runs in the command line (i.e. $ run program starts up a prompt) that runs mathematical calculations. It has it\'s own prompt that takes in text input and responds back through s[详细]
2023-04-03 19:43 分类：问答What is the reading limit of function 'read' in 'unistd.h'?
Standard unix C has this function: ssize_t read(int fd, void *buf, size_t count); But what is the maximum bytes that this \'read\' function can r开发者_C百科ead 1 time?From man read(2):[详细]
2023-04-03 08:24 分类：问答How to modify register values in a PLC via Terminal in Mac OSX?
Simply speaking, I have a Programmable Logic Controller connected to my Mac via a USB to Serial adapter. There is a开发者_高级运维nother adapter converting the RS-232 from the computer to the RS-485 r[详细]
2023-04-03 04:01 分类：问答Write a float with full precision in C++
In C++, can I write and read back a float (or double) in text format without losing precision? Consider the following:[详细]
2023-04-02 16:28 分类：问答UIWebView Crashing App
This is my Code that all together crashes my app The bit that assigns the webview its value: It works fine until the last line. When it SIGBARTS.[详细]
2023-04-02 16:15 分类：问答Why File.renameTo doesn't change where File points to?
File oldFile = new File(\"old\"); if (oldFile.renameTo(new File(\"new\"))){ System.out.println(oldFile.getName());//this prints \"old\"[详细]
2023-04-02 14:13 分类：问答Read and write dat file in php
recently i\'ve used Maxmind geoip to locate country & city based on the ip. It has huge content inside the dat files. but retrieving of those records happens within a seconds.so i\'m so curious to[详细]
2023-04-02 11:39 分类：问答C - Writing structs to a file (.pcap)
I am trying to write a .pcap file, which is something that can be used in Wireshark. In order to do that, I have a couple of structs with various data types I need to write to a file. (see code)[详细]
2023-04-02 07:30 分类：问答
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