c# - in random number generator -

-


c# - in random number generator -

for reason, code works fine when don't utilize seed in random class, if seek utilize datetime.now more random number, stackoverflowexception! class simple. tell me i'm doing wrong here? see makeuniquefilename.

public class temputil { private int strcmp(string s1, string s2) { seek { (int = 0; < s1.length; i++) if (s1[i] != s2[i]) homecoming 0; homecoming 1; } grab (indexoutofrangeexception) { homecoming 0; } } private int uniqueness(object randomobj) { switch (randomobj.tostring()) { case "system.object": case "system.string": homecoming randomobj.tostring()[0]; case "system.int32": homecoming int.parse(randomobj.tostring()); case "system.boolean": homecoming strcmp(randomobj.tostring(), "true"); default: homecoming uniqueness(randomobj.tostring()); } } public string makeuniquefilename() { homecoming "c:\\windows\\temp\\" + new random(uniqueness(datetime.now)).nextdouble() + ".tmp"; } }

in short:

it should

switch (randomobj.gettype().tostring())

instead of

switch (randomobj.tostring())

but isn't clever.

c# random stack-overflow

Comments

Post a Comment

Popular posts from this blog

delphi - blogger via idHTTP : error 400 bad request -

-
delphi - blogger via idHTTP : error 400 bad request - i'm trying post blogger using idhttp component, however, i'm getting "http/1.0 400 bad request" error. procedure tform1.button1click(sender: tobject); var request,response,req : tstringlist; auth,blogid : string; begin blogid := '00000000000000000000000'; request := tstringlist.create; response := tstringlist.create; req := tstringlist.create; idhttp1.request.connection := 'keep-alive'; idhttp1.request.contenttype := 'application/x-www-form-urlencoded'; idssliohandlersocket1.ssloptions.method := sslvsslv23; request.clear(); request.values['accounttype'] := 'google'; request.values['email'] := 'xxx@gmail.com'; request.values['passwd'] := 'yyy'; request.values['service'] := 'blogger'; response.text :=idhttp1.post('https://www.google.com/accounts/clientlogin',request); auth := resp...
Read more

c++ - cuda, pycuda -- how to write complex numbers -- errors:class "cuComplex" has no member "i" -

-
c++ - cuda, pycuda -- how to write complex numbers -- errors:class "cuComplex" has no member "i" - i have difficulties utilize complex numbers in cuda,pycuda. i have in c: #include <complex> typedef std::complex<double> cmplx; .... cmplx j(0.,1.); also,in same code: #include <boost/python.hpp> #include <boost/array.hpp> ... typedef std::vector< boost::array<std::complex<double>,3 > > complexfieldtype; typedef std::vector< boost::array<double,3> > realfieldtype; ... __global__ void compute(realfieldtype const & rs,complexfieldtype const & m,..) ... how can convert utilize pycuda? tried sth (according book 'cuda example'): struct cucomplex { float real; float imag; cucomplex(float a,float b): real(a),imag(b){} cucomplex operator *(const cucomplex& a) { homecoming cucomplex(real*a.real -imag*a.imag ,imag*a.real +real*a.imag); } cucomplex operat...
Read more

How do I check if an insert was successful with MySQLdb in Python? -

-
How do I check if an insert was successful with MySQLdb in Python? - i have code: cursor = conn.cursor() cursor.execute(("insert new_files (videos_id, filename, " "is_processing) values (%s,%s,1)"), (id, filename)) logging.warn("%d", cursor.rowcount) if (cursor.rowcount == 1): logging.info("inserted values %d, %s", id, filename) else: logging.warn("failed insert values %d, %s", id, filename) cursor.close() fun is, cursor.rowcount always one, though updated database create videos_id unique key. is, insert fails because in tests same videos_id going appear (and when check database, nil inserted). whatever reason, rowcount 1 - logging.warn have spits out rowcount of 1. so, question: can utilize rowcount work out if insert went fine? if so, (presumably) doing wrong? otherwise, how check if insert went fine? your code not commit after modifications (your modifications rolled back). should...
Read more