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Testing for empty or nil-value string [duplicate]
...lse (because of short-circuiting).
This should be sufficient:
variable = id if variable.nil? || variable.empty?
If you're working with Ruby on Rails, Object.blank? solves this exact problem:
An object is blank if it’s false, empty, or a whitespace string. For example, "", " ", nil, [], a...
How to make a JSONP request from Javascript without JQuery?
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Here's a JSBin that can be used to fiddle with JSONP from Wikipedia. It was referenced in this answer.
– rkagerer
Mar 8 '13 at 14:07
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What jsf component can render a div tag?
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Addendum, or set the ID attribute. If I don't do this, it just shows up in the HTML without the surrounding DIV tags.
– James McMahon
Apr 1 '11 at 14:56
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How to merge YAML arrays?
...@MinaLuke, inferior in comparison to what? None of the current answers provide a way to merge two items using only yaml... Moreover, there is nothing in the question stating that the OP wishes to use this in CI/CD. Finally, when this is used in CI/CD, logging only depends on the particular CI/CD use...
What's the best way to share data between activities?
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Here a compilation of most common ways to achieve this:
Send data inside intent
Static fields
HashMap of WeakReferences
Persist objects (sqlite, share preferences, file, etc.)
TL;DR: there are two ways of sharing data: passing data in the intent's extras or saving it somewhere else. If data ...
How to remove all click event handlers using jQuery?
...the following:
$("#saveBtn").off("click").click(function() { saveQuestion(id); });
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Variable is accessed within inner class. Needs to be declared final
I'm getting a compilation error inside of my onClick .
6 Answers
6
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TCP 的那些事儿（上） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，这是一把双刃剑。
SACK 方法
另外一种更好的方式叫：Selective Acknowledgment (SACK)（参看RFC 2018），这种方式需要在TCP头里加一个SACK的东西，ACK还是Fast Retransmit的ACK，SACK则是汇报收到的数据碎版。参看下图：
这样，在发送端...
Bootstrap with jQuery Validation Plugin
I am trying to add validation to my form with jQuery Validation Plugin, but I'm having a problem where the plugin puts the error messages when I'm using input groups.
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putting datepicker() on dynamically created elements - JQuery/JQueryUI
... datepicker. If you do, add this to remove the hasDatepicker class AND the id datepicker adds to your input: .... find('input.hasDatepicker').removeClass('hasDatepicker').removeAttr('id');
– yahermann
Jan 27 '17 at 5:35
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