size

c++之vector容器入门

南楼画角 提交于 2019-12-01 09:09:21
对于c++的vector容器的函数应用: #include<string> #include<iostream> #include<vector> using namespace std; int main(){ int i=0; vector <int> vt; vector <int>::iterator it; for(i=0;i<12;i++) vt.push_back(i); //在容器vt添加元素 cout<<"数组形式结果:"<<endl; for(i=0;i<12;i++){ cout<<vt[i]<<" "; } cout<<endl; cout<<"迭代器形式结果:"<<endl; for(it=vt.begin();it!=vt.end();it++){ cout<<*it<<" "; } cout<<endl; cout<<"vt元素个数是:"<<vt.size()<<endl; //size函数 //插入元素函数 vt.insert(vt.begin()+5,22); cout<<"往vt[5]插入元素后容器情况:"<<endl; for(i=0;i<vt.size();i++){ cout<<vt[i]<<" "; } cout<<endl; vt.pop_back(); cout<<"删除尾元素后容器最后一个元素是:"<<vt[vt.size()-1]

How to declare an array with an arbitrary size

情到浓时终转凉″ 提交于 2019-12-01 08:42:33
Ok, this is a C programming homework question. But I'm truly stuck. I ask the user to input words, and then I insert the input into an array, but I can't have any control over the number of words the user types. I guess what I'm asking is how do you declare a an array in C without declaring its length and without asking the user what the length should be. I know this has something to do with malloc, but if you could give me some examples of how to do this, I would really appreciate it. Dani You can realloc it every time like: int size = 0; char **array = malloc(0); while(/* something */) {

How to find uncompressed size of ionic zip file

試著忘記壹切 提交于 2019-12-01 08:36:26
I have a zip file compressed using Ionic zip . Before extracting I need to verify the available disk space. But how do I find the uncompressed size before hand? Is there any header information in the zip file (by ionic) so that I can read it? Taniq This should do the trick: static long totaluncompressedsize; static string info; . . . . // Option 1 foreach (ZipEntry e in zip) { long uncompressedsize = e.UncompressedSize; totaluncompressedsize += uncompressedsize; } // Or // Option 2 - will need to sift through the mass of info using (ZipFile zip = ZipFile.Read(zipFile)) { info = zip.Info; }

How to get actual size of mounted SD card in Android?

橙三吉。 提交于 2019-12-01 08:36:05
问题 I'm trying to find a way to find the total size and free space of a mounted SD card on a phone, from my research on SOF and on the Android devs site I was able to find the method getExternalStorageDirectory() but according to the Android API this returns a directory that is not necessarily external: "Traditionally this is an SD card, but it may also be implemented as built-in storage in a device that is distinct from the protected internal storage and can be mounted as a filesystem on a

MATLAB: Comparing 2 arrays with different lengths

為{幸葍}努か 提交于 2019-12-01 08:07:34
问题 I have two arrays with different lengths (due to different sampling rates) that I need to compare. I'd like to downsample the larger array to match the smaller one in length, however the factor is not an integer but a decimal. For an example: a = 1 1.375 1.75 2.125 2.5 2.875 3.25 b = 1 2 3 Is there any way to manipulate these arrays to match lengths? 回答1: That's easy to do with clever use of interp1. The trick is that the keypoints used for interpolation is an array going from 1 up to as many

Recursive Class Instance Size in Delphi

╄→尐↘猪︶ㄣ 提交于 2019-12-01 08:06:09
Is there a way to get the actual size of a class instance in Delphi? I know about the InstanceSize method of the TObject class but that method does not recursively invokes itself for object members. For example, let's say we have two classes: type MyClass1 = class private myVar1 : integer; myVar2 : integer; end; type MyClass2 = class private myOtherVar1 : integer; myOtherVar2 : MyClass1; end; for this segment of code, MyClass1 will be 12 bytes length (4 bytes for each integer plus 4 for the class overhead) and MyClass2 will be 24 bytes lengh (4 bytes for the class overhead, 12 bytes from

Does the size of a Windows Form include its Border?

我只是一个虾纸丫 提交于 2019-12-01 08:06:01
问题 When you set the size of a windows form, ie; Form1.Size = new System.Drawing.Size(700, 500); Does this include the border which windows puts around the form? Because I have added images (via pictureBoxes) which are 700x500 to my form, and they have been cut off by the border. Also: When I say the border, I mean the default windows border which you can drag the edges of to resize it, as well as contain the red X, Minimize, and Maximize buttons. 回答1: That depends, you'll get a different size

Flexible android layout for multiple screen sizes/densities

久未见 提交于 2019-12-01 07:44:04
I am working on creating a card game for android. I am trying to come up with a layout that will allow the game to be played on all screen sizes and densities. I have read: http://developer.android.com/guide/practices/screens_support.html However, I am still confused on the best way to do this. For this game, I need the cards laid out in landscape mode, in 5 columns. There are places above the 5 columns for additional cards. It is very similar to solitaire in this respect...but I only have need for 5 columns instead of 7. What size card images should be in ldpi, mdpi, and hdpi? What type of

Resize in Windows Forms controls along with form resize

爷,独闯天下 提交于 2019-12-01 07:00:46
I have a few controls (group boxes, tables, gridview, etc.) in my C# Windows Forms application, and I would like to scale them based on screen width/height. For example, the screen starts at, let's say, 640x480 and then it gets maximized to 1920x1200. I want to be able to increase the width/height of the controls so they look the exact same after the window gets re-sized. What is the best way to do that, without setting every width/height property manually? What is the best way to do that, without setting every width/height property manually? Instead of specifying width and height, you can use

Reduce jar file size

狂风中的少年 提交于 2019-12-01 06:20:24
Is there any way to reduce jar file size? I want a tool that reduces the unused dependencies. I use maven for dependency management. A JAR file doesn't normally contain dependencies in the Maven sense. So you must be talking about: a WAR or EAR or similar file, a so-called UberJAR file produced by combining lots of JAR files; e.g. using the Maven shade plugin, or dependencies at a finer granularity than Maven modules. In the first two cases, you can keep out nominally dependent JARs by excluding them, either in the dependency specification, or in the war or shade plugin build descriptor. IIRC,