How generics influenced the design of C# and .NET? -

-

this might broad question not clear , curious.

often times problems hear reasoning because generics not available in .net 1.0. makes me think either of these 2 things:

  1. generics not thought of before, developers came after .net 1.0 drastically affect design of c# , .net couldn't because of decisions made (backwards compatibility).

  2. generics planned since beginning, problem arise not releasing .net 1.0 not being able use till 2.0. other this, no redundant features introduced or wrong, irreversible decisions committed.

i assume #1, #2 actual case?

generics have been around long time , can loosely compared c++ templates, although concept (and implementation in other languages) predates that.

.net 1.0 first cut of platform plan ship works reasonably. generics have have been on "planned future" if decent architect on team, added later. in fact, paper on implementing generics .net came out year before .net framework 1.0 rtm eventuated.

timeline: (http://en.wikipedia.org/wiki/list_of_.net_framework_versions)

2002-03-05 .net framework version: 1.0.3705.0 released ~may, 2001 don syme's paper on "design , implementation of generics .net"

microsoft have taken 10 years build .net framework 4.0 (as version 1.0), code , many features out @ once, take 5 years find bugs , usability issues if project can succeed.

so answer question #2.

don syme designed , implementated generics c# , .net.

resources

anders hejlsberg hero - wikipedia - original author of turbo pascal, chief architect of delphi, later lead architect of c#


Comments

Post a Comment

Popular posts from this blog

linux - Mailx and Gmail nss config dir -

-
i trying send mail linux command line using mailx command. can send local domain no problem want set mail send gmail account receive mail sent gmail account. after configuring mail.rc so: account gmail { set smtp=smtps://smtp.gmail.com:587 set smtp-auth=login set smtp-auth-user=username@gmail.com set smtp-auth-password=password set ssl-verify=ignore } i error: resolving host smtp.gmail.com . . . done. connecting 74.125.25.109 . . . connected. missing "nss-config-dir" variable. "/home/username/dead.letter" 11/354 . . . message not sent. after looking "nss-config-dir" here , located certn.db , keyn.db files , added mail.rc so: account gmail { set smtp=smtps://smtp.gmail.com:587 set smtp-auth=login set smtp-auth-user=username@gmail.com set smtp-auth-password=password set ssl-verify=ignore set nss-config-dir=/home/user/.mozilla/firefox/location.default } now when try send mail using command: echo "sent gmail account" | mailx -v -a
Read more

c# - Is it possible to remove an existing registration from Autofac container builder? -

-
something along lines: builder.registertype<mytype>().as<itype>(); builder.registertype<mytype2>().as<itype>(); builder.deregistertype<mytype>().as<itype>() var container = builder.build(); var types = container.resolve<ienumerable<itype>>(); assert.istrue(types.count == 1); assert.istrue(types[0].gettype == typeof(mytype2)); scenario: go through bunch of assemblies , go register types want make sure have 1 implementation of given type. need before create container. track on own nice if autofac me bit. this cannot done directly using containerbuilder , unless start on new one. mind you, having first built container should able construct new container filtering away unwanted types , reusing registrations first container. this: ... var container = builder.build(); builder = new containerbuilder(); var components = container.componentregistry.registrations .where(cr => cr.activator.limittype != typ
Read more

php - Mysql PK and FK char(36) vs int(10) -

-
i have read mysql can handle indexes , searches better if tables keys integers rather char(36) uuid's. is worth converting int(10)? note: use 1 server , have have plans use multiple databases concurrently therefore removing 1 of big reasons using uuid. our tables innodb if makes difference. thanks in advance. usually rdbms can handle integer keys pk more efficient, other datatypes. reason how build index column, yes: long dont require string (or other typed) keys, should use integers. however: char(36) , int(10) far away being equal, because int(10) much smaller, char(36). dont know, if require many different keys, should keep in mind. update, complete last paragraph: int(10) 32-bit, char(36) 36 - ^byte^ (= 288-bit). not mean, int consumes less space, means, char(36) has 4 times more different keys.
Read more