copy

问题 I've had to do this many times in the past, and I've never been satisfied with the results. Can anyone suggest a fast way of copying a contiguous bit array from source to destination where both the source and destination's may not be aligned (right shifted) on convenient processor boundaries? If both the source and destination's aren't aligned , the problem can quickly be changed into one where only either of them aren't aligned (after the first copy say). As a starting point, my code

问题 I have a virtualenv located at /home/user/virtualenvs/Environment . Now I need this environment at another PC. So I installed virtualenv-clone and used it to clone /Environment . Then I copied it to the other PC via USB. I can activate it with source activate , but when I try to start the python interpreter with sudo ./Environment/bin/python I get ./bin/python: 1: ./bin/python: Syntax Error: "(" unexpected Executing it without sudo gives me an error telling me that there is an error in the

问题 Can gradle alter the structure of the tree while copying? original mod/a/src mod/b/src desired dest/mod-a/source dest/mod-b/source dest/mod-c/source I'm not sure where I should create a closure and override the copy tree logic I'd like to do the gradle equivalent of ant's globmapper functionality <property name="from.dir" location=".."/> <property name="to.dir" location="dbutil"/> <copy> <fileset dir="${from.dir}" ... /> <globmapper from="${from.dir}/*/db" to="${to.dir}"/> </copy> Thanks

问题 I have a question which is exactly similar to this question. As part of my work, I have to copy output from the R Studio Console to an excel worksheet in order to make excel graphs. However, the R Studio Console uses formatted text, which excel doesn't read so well. To compensate, I'm always copying from the R Studio Console, pasting into notepad, then copying into Excel. That way, when I paste a table, I can tell excel that it's actually fixed width delimited data, and not just a clump of

问题 According to this: NSString property: copy or retain? For NSString/NSMutableString, copy is recommended. How about NSArray/NSMutableArray? 回答1: choose copy , unless you have a very specific reason not to, as well as all the supporting code/interface to back that up. i detailed the rationale and several implications here: NSMutableString as retain/copy that example is based on NSString s, but the same applies for NSArray s. 回答2: Since you're asking about NSArray (rather than NSMutableArray),

问题 I have a situation where I need to copy a few specific files in a MSBuild script, but they may or may not exist. If they don't exist it's fine, I don't need them then. But the standard <copy> task throws an error if it cannot find each and every item in the list... 回答1: Use the Exists condition on Copy task. <CreateItem Include="*.xml"> <Output ItemName="ItemsThatNeedToBeCopied" TaskParameter="Include"/> </CreateItem> <Copy SourceFiles="@(ItemsThatNeedToBeCopied)" DestinationFolder="$

问题 What is the difference between deep and shallow merge of objects in javascript? As far as I understand, deep merge recursively copies all the source object enumerable properties into target object. But what does shallow merge do? 回答1: In a shallow merge, the properties of the first object are overwritten with the same property values of the second object. Lets look at an example. Setup: var obj1 = { foo: { prop1: 42, }, }; var obj2 = { foo: { prop2: 21, }, bar: { prop3: 10, }, }; Shallow: var

问题 I need to copy std::set to std::vector : std::set <double> input; input.insert(5); input.insert(6); std::vector <double> output; std::copy(input.begin(), input.end(), output.begin()); //Error: Vector iterator not dereferencable Where is the problem? 回答1: You need to use a back_inserter : std::copy(input.begin(), input.end(), std::back_inserter(output)); std::copy doesn't add elements to the container into which you are inserting: it can't; it only has an iterator into the container. Because

问题 I'm working with an xml that I need to copy and update to pass on for further processing. The issue I'm having is that I have not figured out an efficient method to do this. Essentially, I want to update some data, conditionally, then copy all the nodes that were not updated. Why this is challenging is due to the volume and variance in the number and name of nodes to be copied. I also want to NOT copy nodes that have no text value. Here is an example: INPUT XML <root> <PersonProfile xmlns:

问题 I want to get the source file information, when I want to copy the source file and then get the destination file information, when the source file has already being copied. The problem with the code is that I can't copy and get the source and destination file information. How could you be able to fix my code to copy a file and get source and destination information? Code: #define BUFFER 100 // ** increased - file path can get pretty long #define BUFFERSIZE 4096 #define COPYMODE 0644 void oops