string-formatting

问题 The user will enter a dollar value as an int , and I'd like to convert the result into a shortened, formatted string. So if the user enters 1700, the string would say "$1.7k". If the user enters 32600000, the string would say "$32.6m". Update Here's the code I have so far. It seems to be working for numbers ~10k. I would just add more if statements for bigger numbers. But is there a more efficient way to do this? NSNumberFormatter *nformat = [[NSNumberFormatter alloc] init]; [nformat

问题 I have a function in Matlab that has some variables in it. I need to print out the variable_names (in case of an exception etc.). I am aware of inputname function but it works for input_arguments only. mat = [ 1 2 ; 3 4 ] ; % disp(['Error in var: ' ??(a)]) % desired ouput: Error in var: mat (and NOT 1 2 ; 3 4!) Thanks! 回答1: Matlab essentially does not let you do that. However, you can write a helper function to ease your pain in creating output like that: function disp_msg_var(msg, v) disp(

问题 I've been looking through the documentation on string formatting in .Net and haven't found this bit yet, and was hoping someone could point me in the right direction. I've come across a working piece of code that takes SqlParameters and puts them in a string like this: SqlParameter[] arrParams = new SqlParameter[] { new SqlParameter("@ClientID", clid), new SqlParameter("@CustomerID", cuid), new SqlParameter("@AdminUser", false) }; string sqlText = string.Format("Insert into [Table1] (RID,

问题 I want to use string formatting to insert variable values into mystring where some of the variables are normal values and some are list values. myname = 'tom' mykids = ['aa', 'bb', 'cc'] mystring = """ hello my name is %s and this are my kids %s, %s, %s """ % (myname, tuple(mykids)) I get the error not enough arguments because i probably did the tuple(mykids) wrong. help appreciated. 回答1: You can use str.format() instead: >>> myname = 'tom' >>> mykids = ['aa','bb','cc'] >>> mystring = 'hello

问题 I want to use string formatting to insert variable values into mystring where some of the variables are normal values and some are list values. myname = 'tom' mykids = ['aa', 'bb', 'cc'] mystring = """ hello my name is %s and this are my kids %s, %s, %s """ % (myname, tuple(mykids)) I get the error not enough arguments because i probably did the tuple(mykids) wrong. help appreciated. 回答1: You can use str.format() instead: >>> myname = 'tom' >>> mykids = ['aa','bb','cc'] >>> mystring = 'hello

问题 I have a little bug to fix. You can see in the Picture 3 Months outputed. So that is my code how I displat this result. I try String.format but I dont know how to use it at this tabs. I try it with this tabs but unfortunally I find out that the format for the first Month (January) is short then the other month. All months use 3 tabs but not the first one. public LinkedList<String> buildMonth(int month) { int lengthOfMonth = calender.getLengthOfMonth(this.year, month); LinkedList<String>

问题 In my C# Console program I have 4 variables. Their names and types are as follows: int ID bool Status bool Available int Count I would like to be able to print them to the Console, nicely indented as follows: However, when I use the tabs "\t", to format my string, it does not take into account the text width, and all the values are indented waywardly as follows: How do I fix this? I don't want to use any third party libraries, but simply .NET functionality such as String.Format(). 回答1: You

问题 Please, can some body tell me how to get my double value formatted like "0.0" from code-behind, like this: Binding b = new Binding(DoubleValue); b.StringFormat = "????"; In xaml it works just like that "0.0"... 回答1: What about this? b.StringFormat = "{0:F1}"; See the documentation of StringFormat and also Standard Numeric Format Strings and Custom Numeric Format Strings. EDIT: Just to make clear how a binding would be created and assigned (to the Text property of an imaginary TextBlock named

问题 In Python3.4 you could do the following thing: class MyDict(dict): def __missing__(self, key): return "{%s}" % key And then something like: d = MyDict() d['first_name'] = 'Richard' print('I am {first_name} {last_name}'.format(**d)) Printing, as expected: I am Richard {last_name} But this snippet won't work in Python3.6+, returning a KeyError while trying to get the last_name value from the dictionary, is there any workaround for that string formatting to work in the same way as in Python3.4?

问题 In Python3.4 you could do the following thing: class MyDict(dict): def __missing__(self, key): return "{%s}" % key And then something like: d = MyDict() d['first_name'] = 'Richard' print('I am {first_name} {last_name}'.format(**d)) Printing, as expected: I am Richard {last_name} But this snippet won't work in Python3.6+, returning a KeyError while trying to get the last_name value from the dictionary, is there any workaround for that string formatting to work in the same way as in Python3.4?