string-formatting

问题 I'm looking to pad IP addresses with 0's example 1.2.3.4 -> 001.002.003.004 50.51.52.53 -> 050.051.052.053 Tried this: [string]$paddedIP = $IPvariable [string]$paddedIP.PadLeft(3, '0') Also tried split as well, but I'm new to powershell... 回答1: You can use a combination of .Split() and -join . ('1.2.3.4'.Split('.') | ForEach-Object {$_.PadLeft(3,'0')}) -join '.' With this approach, you are working with strings the entire time. Split('.') creates an array element at every . character. .PadLeft

问题 I'm looking to pad IP addresses with 0's example 1.2.3.4 -> 001.002.003.004 50.51.52.53 -> 050.051.052.053 Tried this: [string]$paddedIP = $IPvariable [string]$paddedIP.PadLeft(3, '0') Also tried split as well, but I'm new to powershell... 回答1: You can use a combination of .Split() and -join . ('1.2.3.4'.Split('.') | ForEach-Object {$_.PadLeft(3,'0')}) -join '.' With this approach, you are working with strings the entire time. Split('.') creates an array element at every . character. .PadLeft

问题 OK, so this seems like a really basic question, but I can't find a workable answer anywhere, so here goes. I have some text: text = ''' Come and see the violence inherent in the system. Help! Help! I'm being repressed! Listen, strange women lyin' in ponds distributin' swords is no basis for a system of government. Supreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony. The Lady of the Lake, her arm clad in the purest shimmering samite held

问题 I have something like: String text = "The user {0} has email address {1}." // params = { "Robert", "myemailaddr@gmail.com" } String msg = MessageFormat.format(text, params); This isn't great for me, because sometimes my translators are not sure what goes in the {0} and {1}, also it would be nice to be able to reword the messages without worrying about the order of the args. I'd like to replace the arguments with readable names instead of numbers. Something like this: String text = "The user

问题 I have something like: String text = "The user {0} has email address {1}." // params = { "Robert", "myemailaddr@gmail.com" } String msg = MessageFormat.format(text, params); This isn't great for me, because sometimes my translators are not sure what goes in the {0} and {1}, also it would be nice to be able to reword the messages without worrying about the order of the args. I'd like to replace the arguments with readable names instead of numbers. Something like this: String text = "The user

问题 I'm trying to align the output of the list like shown: But it keeps coming out like this: My code for all of this is: subject_amount = int(input("\nHow many subject do you want to enrol? ")) class Subject: def __init__(self, subject_code, credit_point): self.subject_code = subject_code self.credit_point = credit_point subjects = [] for i in range(1, (subject_amount + 1)): subject_code = input("\nEnter subject " + str(i) + ": ") credit_point = int(input("Enter subject " + str(i) + " credit

问题 A function which returns a formatted string by replacing all instances of %X with Xth argument in args (0...len(args)) Example: simple_format("%1 calls %0 and %2", "ashok", "hari")=="hari calls ashok and %2" Please help me out. 回答1: >>> "{1} calls {0} and {2}".format( "ashok", "hari", "tom") 'hari calls ashok and tom' If you really need the function simple_format , then: import re def simple_format(*args): s = re.sub(r'%(\d+)', r'{\1}', args[0]) return s.format(*args[1:]) Example: >>> simple

问题 I'd like to set a default value to my model in Controller, But It cannot display in create page. TestModel code: public class TestModel { [DataType(DataType.DateTime), Required] [DisplayFormat(DataFormatString = "yyyy/MM/dd", ApplyFormatInEditMode = true)] public DateTime StartTime { get; set; } [DataType(DataType.DateTime), Required] [DisplayFormat(DataFormatString = "yyyy/MM/dd", ApplyFormatInEditMode = true)] public DateTime EndTime { get; set; } public string Description { get; set; } }

问题 The question is for Python 2.6, that is what we have in production. I have this requirement for formatting a number (like 1234567.0987 or 1234567.0) with comma, and specified number of digits after decimal points. So, it if precision is three, 1234567.0987 may look like 1,234,567.099. I tried using Locale, as suggested by answers to many questions, the problem is that results in two digits after decimal, which is not acceptable for my requirement. I tried searching in other places, but did

问题 I have a question about formatting a decimal number to a certain QString format. Basically, I have an input box in my program that can take any values. I want it to translate the value in this box to the format "+05.30" (based on the value). The value will be limited to +/-99.99. Some examples include: .2 --> +00.02 -1.5 --> -01.50 9.9 --> +09.90 I'm thinking of using a converter like this, but it will have some obvious issues (no leading 0, no leading + sign). QString temp = QString::number