signature

问题 Does anyone know about a way in java to compare a handwritten text sample (e.g. a signature, autograph etc) to one or more samples? Preferably open-source? 回答1: You can check out this OCR Applet. 来源： https://stackoverflow.com/questions/13109435/handwritten-signature-comparison

问题 I have a package with multiple main and I want to define several options: My code is something like this: package Perl6::Documentable::CLI { proto MAIN(|) is export {*} my %*SUB-MAIN-OPTS = :named-everywhere; multi MAIN( "setup" ) { ... } multi MAIN ( "start" , Str :$topdir = "doc", Bool :v(:verbose($v)) = False ) { ... } But when I try to actually execute it with: perl6 -Ilib bin/documentable start -v --topdir=ss It outputs this line: Usage: bin/documentable [--topdir=<Str>] [-v|--verbose]

问题 My program derives a sequence args and a mapping kwargs from user input. I want to check that input, and then forward it to a python function f (which is chosen based on user input). In this case, a function signature mismatch between f and [kw]args is an input error; I must distinguish it from possible programming errors within the implementation of f , even though they might both raise TypeError . So I want to check the signature before attempting the function call. Is there a way to do

问题 I'm trying to sign a pdf through a signing service. This service requires to send a hex encoded SHA256 digest and in return I receive a hex encoded signatureValue. Besides that I also receive a signing certificate, intermediate certificate, OCSP response, and TimeStampToken. However, I already get stuck trying to sign the pdf with the signatureValue. I have read Bruno's white paper, browsed the internet excessively, and tried many different ways, but the signature keeps coming up as invalid.

问题 Using Python 3.x, I'm trying to get the name of all positional arguments from some function i.e: def foo(a, b, c=1): return Right now I'm doing this: from inspect import signature, _empty args =[x for x, p in signature(foo).parameters.items() if p.default == _empty] When the function alows *args i.e: def foo(a, b, c=1, *args): return I'm adding the line: args.remove("args") I was wondering if there is a better way to achieve this. As suggested by Jim Fasarakis-Hilliard one better way to deal

问题 What's the easiest way to find signature of an apk file? Please note that I'm not asking about code. I just want to find it from my pc. Signature like this one 975yYkKAQF+KST7g3ASHvHkYopq= 回答1: Signature[] sigs = context.getPackageManager().getPackageInfo(context.getPackageName(), PackageManager.GET_SIGNATURES).signatures; for (Signature sig : sigs) { Trace.i("MyApp", "Signature hashcode : " + sig.hashCode()); } http://developer.android.com/reference/android/content/pm/PackageManager.html

问题 We have a for fun project which require us to compare two black and white bitmaps of two signature and say whether they are the same persons signature. As this is just two loaded bitmaps rather than data captured from a tablet the approach is going to be a little different to normal signature recognition. I am thinking it would require the following steps Crop the bitmaps to just the signature Try to work out some kind of rotation to align them Resize to make the cropped / rotated bitmaps the

问题 I have this piece of code: - (id) getSearchSuggestions:(NSString*)q; - (NSOperationQueue*) getSearchSuggestions:(NSString*)q callback:(id<UserDelegate>)callback; - (id) getSearchSuggestions; - (NSOperationQueue*) getSearchSuggestions:(id<UserDelegate>)callback; And I Xcode keeps showing me an error on the last line: Duplicate declaration of method "getSearchSuggestions" Why? It seems to me that the signatures are all different. 回答1: This signature: - (id) getSearchSuggestions:(NSString*)q; Is

问题 I’m trying to use Bouncy Castle v1.7 on a Windows Mobile 6.5 device. I’m trying to execute the following code: ISigner signer = SignerUtilities.GetSigner("SHA256withRSA"); Using the Bouncy Castle binaries On the Windows Mobile device, the code results in the following exception being thrown: "The version of the assembly System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=B77A5C561934E089 cannot be loaded by this version of the Microsoft .NET Compact Framework." On a classic desktop

问题 currently I'm interfacing the Twitter API using the OAuth protocol and writing the code in Python. As most of the users out there, I think the toughest part of the specs is dealing with signatures. After wandering around the web in search for a solution, I decided to go for my custom code, so as to have a better understanding of what is going on. For the sake of other users, I'm posting here a very simple and short implementation of the SHA1 signature specs in Python: import hmac from hashlib