convert

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How would I convert a file to a HEX string using Python? I have searched all over Google for this, but can't seem to find anything useful. 回答1: import binascii filename = 'test.dat' with open(filename, 'rb') as f: content = f.read() print(binascii.hexlify(content)) 文章来源: Convert File to HEX String Python

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: Timestamp: 1395660658 Code: //timestamp conversion exports . getCurrentTimeFromStamp = function ( timestamp ) { var d = new Date ( timestamp ); timeStampCon = d . getDate () + '/' + ( d . getMonth ()) + '/' + d . getFullYear () + " " + d . getHours () + ':' + d . getMinutes (); return timeStampCon ; }; This converts the time stamp properly in terms of time format, but the date is always: 17 / 0 / 1970 Why - cheers? 回答1: You have to multiply by 1000 as JavaScript counts in milliseconds since epoch (which is 01/01/1970), not seconds

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a grayscale JPG picture, and I'd like to load it into Bitmap of format Bitmap.Config.ALPHA_8 . Is that possible, how can I do that? It's straightforward to load alpha channel from a PNG (which can have empty R,G,B channels), but I'd like to use JPG for compression. This is a followup question to How to combine two opaque bitmaps into one with alpha channel? 回答1: ColorMatrix to rescue! Quoting Android docs, ColorMatrix: 5x4 matrix for transforming the color+alpha components of a Bitmap. The matrix is stored in a single array, and its

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How do I convert a String into a &str ? More specifically, I would like to convert it into a str with the static lifetime ( &'static str ). 回答1: Updated for Rust 1.0 You cannot obtain &'static str from a String because String s do not live for the entire life of your program, and that's what &'static lifetime means. You can only get a slice parameterized by String own lifetime from it. To go from a String to a slice &'a str you can use slicing syntax: let s: String = "abcdefg".to_owned(); let s_slice: &str = &s[..]; // take a full slice of

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I need to convert the string HTML from a mix of Cyrillic and Latin symbols to UNICODE. I tried the following: Public HTML As String Sub HTMLsearch() GetHTML ("http://nfs.mobile.bg/pcgi/mobile.cgi?act=3&slink=6jkjov&f1=1") MsgBox HTML HTML = StrConv(HTML, vbUnicode) MsgBox HTML End Sub Function GetHTML(URL As String) As String With CreateObject("MSXML2.XMLHTTP") .Open "GET", URL, False .Send HTML = .ResponseText End With End Function You can see what is before and after the StrConv. If you like to get the html in a file, you can use the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: With OpenCV 2, IPython now uses NumPy arrays by default. cvimage = cv2.imread("image.png") #using OpenCV 2 type(cvimage) Out: numpy.ndarray #dtype is uint8 pltimage = plt.imread("image.png") #using Matplotlib type(pltimage) Out: numpy.ndarray #dtype is float plt.imshow(cvimage) # works great cv2.imshow(cvimage) TypeError: Required argument 'mat' (pos 2) not found Since cv2 uses NumPy arrays by default, there is no longer any cv::Mat constructor and NumPy has no functions to convert to a cv::Mat array. Any ideas? 回答1: The function has the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How can I convert a string to a JavaScript array? Look at the code: var string = "0,1"; var array = [string]; alert(array[0]); In this case, alert would pop-up a 0,1 . When it would be an array, it would pop-up a 0 , and when alert(array[1]); is called, it should pop-up the 1 . Is there any chance to convert such string into a JavaScript array? 回答1: For simple array members like that, you can use JSON.parse . var array = JSON.parse("[" + string + "]"); This gives you an Array of numbers. [0, 1] If you use .split() , you'll end up with an

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am using latest version of Play Framework and it's JSON lib like this Json.toJson(obj) . But toJson is not capable of converting any Scala object to JSON, because the structure of data is unknown. Someone suggested using case convert, but here my Scala knowledge falls short. The data comes from database, but the structure of table is not known. Where should I look further to create convert such unknown data structure to JSON? 回答1: Given that there is only a limited number of types you want to serialize to JSON, this should work: object

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Possible Duplicate: T-SQL Cast versus Convert What is the major difference between CAST and CONVERT in SQL cause both performs data type conversion? 回答1: CAST and CONVERT have similar functionality. CONVERT is specific to SQL Server, and allows for a greater breadth of flexibility when converting between date and time values, fractional numbers, and monetary signifiers. CAST is the more ANSI-standard of the two functions. Check this blog for examples of using both of those: http://sqltutorials.blogspot.com/2007/06/sql-cast-and-convert.html

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am newbie to python and need to convert a list to dictionary. I know that we can convert list of tuples to dictionary. This is the input list: L = [1,term1, 3, term2, x, term3,... z, termN] and I want to convert this list to a list of tuples (OR to a dictionary) like this: [(1, term1), (3, term2), (x, term3), ...(z, termN)] How can we do that easily python? 回答1: >>> L = [1, "term1", 3, "term2", 4, "term3", 5, "termN"] # Create an iterator >>> it = iter(L) # zip the iterator with itself >>> zip(it, it) [(1, 'term1'), (3, 'term2'), (4,