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How to tell if a tag failed to load

... return false; }, // add script to dom require: function (url, args) { var me = this; args = args || {}; var scriptTag = document.createElement('script'); var headTag = document.getElementsByTagName('head')[0]; if (!headTag) { ret...
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What's the difference between a POST and a PUT HTTP REQUEST?

...some additional exception which makes the difference very clear is at next URL - dzone.com/articles/put-vs-post – Ashish Shetkar Apr 3 '18 at 12:27 ...
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How can I reference a commit in an issue comment on GitHub?

...tically get turned into a link. See also: The Autolinked references and URLs / Commit SHAs section of Writing on GitHub. share | improve this answer | follow ...
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App Inventor 2 经典蓝牙(SPP) 硬件接入:hc05 · App Inventor 2 中文网

...line-block; width: 24px; height: 24px; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } 文档反馈 切换 目录 在线 客服 扫码添加客服咨询 我要 ...
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What is the official “preferred” way to install pip and virtualenv systemwide?

...ed, get-pip.py will install setuptools for you. I now run the regular: curl --silent --show-error --retry 5 https://bootstrap.pypa.io/get-pip.py | sudo python Here are the official installation instructions: http://pip.readthedocs.org/en/latest/installing.html#install-pip EDIT 25-Jul-2013: Cha...
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How to set selected value of jquery select2?

... multiple: false, minimumInputLength: 1, ajax: { url: "/elements/all", dataType: 'json', quietMillis: 250, data: function(term, page) { return { q: term, }; }, results: function(...
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How to POST raw whole JSON in the body of a Retrofit request?

...alars:2.3.0' Your Interface public interface ApiInterface { String URL_BASE = "http://10.157.102.22/rest/"; @Headers("Content-Type: application/json") @POST("login") Call<User> getUser(@Body String body); } Activity public class SampleActivity extends AppCompatActiv...
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Whether a variable is undefined [duplicate]

... function my_url (base, opt) { var retval = ["" + base]; retval.push( opt.page_name ? "&page_name=" + opt.page_name : ""); retval.push( opt.table_name ? "&table_name=" + opt.table_name : ""); retval.push( opt.optio...
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Using crontab to execute script every minute and another every 24 hours [closed]

...@flaab for every 30 seconds you can try something like this: - * * * * * curl --silent URL >/dev/null 2>&1 * * * * * sleep 30; curl --silent URL >/dev/null 2>&1 – Shashank Shah Nov 28 '16 at 5:15 ...
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How do ports work with IPv6?

... I would say the best reference is Format for Literal IPv6 Addresses in URL's where usage of [] is defined. Also, if it is for programming and code, specifically Java, I would suggest this readsClass for Inet6Address java/net/URL definition where usage of Inet4 address in Inet6 connotation and ...