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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...ence
Massachusetts Institute of Technology
77 Massachusetts Avenue, Cambridge, MA 02139, USA
ABSTRACT
MIT App Inventor is a block-based event-driven programming tool that allows everyone, especially novices, to start programming and building fully functional apps for Android devices. Compared to...
Can a class extend both a class and implement an Interface
... Is it a bad practice?
– Mohammed Shamshid
Feb 28 '19 at 9:49
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How to check if a value exists in an array in Ruby
...nt time (i.e O(1)). So if you array is constant, for example, it is a good idea to use a Set instead. E.g:
require 'set'
ALLOWED_METHODS = Set[:to_s, :to_i, :upcase, :downcase
# etc
]
def foo(what)
raise "Not allowed" unless ALLOWED_METHODS.include?(wh...
Invalid URI: The format of the URI could not be determined
... Nothing wrong at all. I was doing everything really quickly, and I accidently clicked the down button, and it said that unless the question is edited i cannot undo it, so if you could kindly edit your question or something, i can re-upvote you :) So sorry about that :-( I didn't mean to downvot...
Why do we have map, fmap and liftM?
...wered Sep 18 '11 at 18:40
li.davidmli.davidm
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Sublime Text 2 - Link with Editor / Show file in sidebar
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https://github.com/sobstel/SyncedSideBar
You can install this via the Package Control utility (although it doesn't mention it on the github page).
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How to send only one UDP packet with netcat?
... might as well write
echo -n "hello" >/dev/udp/localhost/8000
and avoid all the idiosyncrasies and incompatibilities of netcat.
This also works sending to other hosts, ex:
echo -n "hello" >/dev/udp/remotehost/8000
These are not "real" devices on the file system, but bash "special" alias...
How do I fetch lines before/after the grep result in bash?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
Android.app Fragments vs. android.support.v4.app using ViewPager?
I have a question regarding the Android Support Libraries, Fragments, and as a specific example, the ViewPager class. My intention is to create an app with similar functionality to the sample provided on the Android Developer website ( http://developer.android.com/training/animation/screen-slide....
#ifdef in C#
...
#if DEBUG
bool bypassCheck=TRUE_OR_FALSE;//i will decide depending on what i am debugging
#else
bool bypassCheck = false; //NEVER bypass it
#endif
Make sure you have the checkbox to define DEBUG checked in your build properties.
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