size

I have a legacy firmware application that requires new functionality. The size of the application was already near the limited flash capacity of the device and the few new functions and variables pushed it over the edge. Turning on compiler optimization does the trick, but the customer is wary of doing so because they have caused failures in the past. So, what are some common things to look for when refactoring C code to produce smaller output? Adam Davis Use generation functions instead of data tables where possible Disable inline functions Turn frequently used macros into functions Reduce

How do I find the size of a 2D array in C++? Is there any predefined function like sizeof to determine the size of the array? Also, can anyone tell me how to detect an error in the getvalue method for arrays while trying to get a value which is not set? Suppose you were only allowed to use array then you could find the size of 2-d array by the following way. int ary[][5] = { {1, 2, 3, 4, 5}, {6, 7, 8, 9, 0} }; int rows = sizeof ary / sizeof ary[0]; // 2 rows int cols = sizeof ary[0] / sizeof(int); // 5 cols sizeof(yourObj)/sizeOf(yourObj[0]) should do the trick Use an std::vector . std::vector

how do i get size of folder NSCachesDirectory i.e /Library/Cache. i want to know size of this folder so that i can eventually clear this. thanks. Edit: here is my code. NSDictionary *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:folderPath error:&error]; if (attributes != nil) { if (fileSize = [attributes objectForKey:NSFileSize]) { NSLog(@"size of :%@ = %qi\n",folderPath, [fileSize unsignedLongLongValue]); } } when i run this it gives my file size 768(dont know bytes or KB) and i check in finder it shows me folder size 168KB. i dont know whats wrong. Something like the

LVM实现新挂载磁盘扩容到原有目录 1 #查看磁盘 2 fdisk -l 3 #创建pv 4 pvcreate /dev/sdb 5 [root@VM-67-49 ~]# pvcreate /dev/sdb 6 Physical volume "/dev/sdb" successfully created. 7 [root@VM-67-49 ~]# pvdisplay 8 --- Physical volume --- 9 PV Name /dev/sda2 10 VG Name centos 11 PV Size 29.51 GiB / not usable 3.00 MiB 12 Allocatable yes 13 PE Size 4.00 MiB 14 Total PE 7554 15 Free PE 10 16 Allocated PE 7544 17 PV UUID jfRAJl-pnUs-8lXi-1F37-IX3t-Nq8S-RdtQvq 18 19 "/dev/sdb" is a new physical volume of "100.00 GiB" 20 --- NEW Physical volume --- 21 PV Name /dev/sdb 22 VG Name 23 PV Size 100.00 GiB 24 Allocatable NO 25 PE

//C++图像存储成二进制文件： Mat img_target = Mat::zeros(cv::Size(target_w, target_h), CV_8UC3); Mat img_resize; cv::resize(input_img_color, img_resize, Size(padded_img_w, padded_img_h)); img_resize.copyTo(img_target(cv::Rect(offset_w, offset_h, padded_img_w, padded_img_h))); std::vector<uchar> data_encode; cv::imencode(".jpg", img_target, data_encode); std::string str_encode(data_encode.begin(), data_encode.end()); char* char_r=(char *)malloc(sizeof(char) * (str_encode.size())); memcpy(char_r, str_encode.data(), sizeof(char) * (str_encode.size())); objResp.set_debug_img(char_r, str_encode.size()); img

When I search for packages on NPM, I would like to see package sizes (in KB or MB, etc). NPM doesn’t seem to show this information. How can I determine how much bloat an NPM package will add to my project? What you probably want to measure is the impact a package has if you were to add it to your app bundle. Most of the other answers will estimate the size of the source files only, which maybe inaccurate due to inline comments, long var names etc. There is a small utility I made that'll tell you the min + gzipped size of the package after it gets into you bundle - https://bundlephobia.com Take

I can't seem to find a definitive answer on this and I want to make sure I understand this to the "n'th level" :-) a = { "a" => "Hello", "b" => "World" } a.count # 2 a.size # 2 a.length # 2 a = [ 10, 20 ] a.count # 2 a.size # 2 a.length # 2 So which to use? If I want to know if a has more than one element then it doesn't seem to matter but I want to make sure I understand the real difference. This applies to arrays too. I get the same results. Also, I realize that count/size/length have different meanings with ActiveRecord. I'm mostly interested in pure Ruby (1.92) right now but if anyone