外文分享

问题 I have a list of lengths for pipes and I need fit these lengths within maximum allowed length for the best yield For example the max allowed length is 90 and the pieces I need to make are: 25, 60, 13, 48, 23, 29, 27, 22 For the best fit within 90 I'd have a group of these numbers: 60, 29 (89 total) 27, 25, 13, 23 (88 total) 48, 22 (70 total) I found this answer to similar question, but I don't know how to convert it to use in excel or javascript or php Any help would be appreciated. Thank you

问题 I am a bit unclear about how to secure (or protect) bearer tokens when using pure JavaScript applications. I know when user request token to the server it can come with a validity of 14 days or 24 hours. but once the user has token there is no neat (assured) way of securing this from XSS or CSRF attacks (am I missing something?). Now lets say user is logged into the web application and the browser has this token which is valid for 14 days. If the user is accessing another web application

问题 Is there some way to make R use zero based indexing for vectors and other sequence data structures as is followed, for example in C and python. We have some code that does some numerical processing in C, we are thinking of porting it over into R to make use of its advanced statistical functions, but the lack(as per my understanding after googling) of zero based index makes the task a bit more difficult. 回答1: TL;DR: just don't do it! I don't think the zero/one-based indexing is a major

问题 I'm sure this must be simple, but I can't figure out how to word it correctly in Google... I have a config which has a field: TimeToPoll="1d" Now I want to do something like : TimeSpan.Parse(TimeToPoll); Returning a timespan of one day. In C# EDIT: I'm looking for a method which allows parse of "1d" as well as "1s" or "1y" etc. Is this possible? Meaning: "1d" parses to {1.00:00:00} "1h" parses to {0.01:00:00} "1m" parses to {0.00:01:00} "1s" parses to {0.00:00:01} 回答1: The d is not needed and

问题 Is there some way to make R use zero based indexing for vectors and other sequence data structures as is followed, for example in C and python. We have some code that does some numerical processing in C, we are thinking of porting it over into R to make use of its advanced statistical functions, but the lack(as per my understanding after googling) of zero based index makes the task a bit more difficult. 回答1: TL;DR: just don't do it! I don't think the zero/one-based indexing is a major

问题 I am a bit unclear about how to secure (or protect) bearer tokens when using pure JavaScript applications. I know when user request token to the server it can come with a validity of 14 days or 24 hours. but once the user has token there is no neat (assured) way of securing this from XSS or CSRF attacks (am I missing something?). Now lets say user is logged into the web application and the browser has this token which is valid for 14 days. If the user is accessing another web application

问题 I am battling this DropDownItem box error, everything seems to work, but pops up the yellow out of bounds while it loads. Tried several things and can not get it resolved. I have this code for my Widget . @override Widget build(BuildContext context) { var _children = <Widget>[ !_createNew ? _referrerPractice() : _referrerCreate(), ]; return new Scaffold( appBar: new AppBar( title: new Text(widget.title), ), body: new Column( mainAxisSize: MainAxisSize.max, children: _children, )); } I then

问题 I am a bit unclear about how to secure (or protect) bearer tokens when using pure JavaScript applications. I know when user request token to the server it can come with a validity of 14 days or 24 hours. but once the user has token there is no neat (assured) way of securing this from XSS or CSRF attacks (am I missing something?). Now lets say user is logged into the web application and the browser has this token which is valid for 14 days. If the user is accessing another web application

问题 I am battling this DropDownItem box error, everything seems to work, but pops up the yellow out of bounds while it loads. Tried several things and can not get it resolved. I have this code for my Widget . @override Widget build(BuildContext context) { var _children = <Widget>[ !_createNew ? _referrerPractice() : _referrerCreate(), ]; return new Scaffold( appBar: new AppBar( title: new Text(widget.title), ), body: new Column( mainAxisSize: MainAxisSize.max, children: _children, )); } I then

问题 we can simply use: crc = struct.unpack('>i', data) why people like this: (crc,) = struct.unpack('>i', data) what does the comma mean? 回答1: The first variant returns a single-element tuple: In [13]: crc = struct.unpack('>i', '0000') In [14]: crc Out[14]: (808464432,) To get to the value, you have to write crc[0] . The second variant unpacks the tuple, enabling you to write crc instead of crc[0] : In [15]: (crc,) = struct.unpack('>i', '0000') In [16]: crc Out[16]: 808464432 回答2: the unpack