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How to get key names from JSON using jq

...x", "Manifest-Version" : "1.0", "appname" : "testApp", "build-date" : "02-03-2014-13:41", "version" : "testBox" } $ jq 'keys' file.json [ "Archiver-Version", "Build-Id", "Build-Jdk", "Build-Number", "Build-Tag", "Built-By", "Created-By", "Implementation-Title", "Implementation-Ven...
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Why is creating a Thread said to be expensive?

...thias Braun 22k1616 gold badges104104 silver badges138138 bronze badges answered Mar 30 '11 at 7:16 Stephen CStephen C 603k8282 go...
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What is the difference between print and puts?

... 381 puts adds a new line to the end of each argument if there is not one already. print does not...
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How to install therubyracer gem on 10.10 Yosemite?

...8 bundle install bundle exec rake clean build binary gem install pkg/libv8-3.16.14.3-x86_64-darwin-12.gem #note that libv8 version may change, so tab through files in pkg/, also remember to use the one with version specified then just bundle your project gems this is the only way it worked for me...
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ADB Shell Input Events

... 433 By adb shell input keyevent, either an event_code or a string will be sent to the device. usag...
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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP

..., "", "0", null, false or []. Example: $o = []; @$var = ["",0,null,1,2,3,$foo,$o['myIndex']]; array_walk($var, function($v) { echo (!isset($v) || $v == false) ? 'true ' : 'false'; echo ' ' . (empty($v) ? 'true' : 'false'); echo "\n"; }); Test the above snippet in the 3v4l.org onlin...
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When would anyone use a union? Is it a remnant from the C-only days?

... | edited Oct 26 '15 at 23:37 pmttavara 44077 silver badges1111 bronze badges answered Jan 25 '11 at 1:...
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What's the difference between assignment operator and copy constructor?

...| edited Apr 24 '19 at 17:33 Matthias 3,23122 gold badges2222 silver badges4141 bronze badges answered J...
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AngularJS: How can I pass variables between controllers?

... GloopyGloopy 37.4k1515 gold badges9999 silver badges7171 bronze badges ...
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ASP.NET MVC JsonResult Date Format

... represents milliseconds since epoch (UTC). So November 29, 1989, 4:55:30 AM, in UTC is encoded as "\/Date(628318530718)\/". A solution would be to just parse it out: value = new Date(parseInt(value.replace("/Date(", "").replace(")/",""), 10)); However I've heard that there is a setting s...