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How to check if object property exists with a variable holding the property name?
...his method:
if (myObj.hasOwnProperty('myProp')) {
// do something
}
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
Another way is to use in operator, but you need quotes here as well:
if ('myProp' in myObj) {
// do something
}
ht...
rails - Devise - Handling - devise_error_messages
...trying to figure this out myself. I just found this issue logged on Github https://github.com/plataformatec/devise/issues/issue/504/#comment_574788
Jose is saying that devise_error_messsages! method is just a stub (though it contains implementation) and that we're supposed to override/replace it. I...
How do you run your own code alongside Tkinter's event loop?
...port time
def GetDateTime():
# Get current date and time in ISO8601
# https://en.wikipedia.org/wiki/ISO_8601
# https://xkcd.com/1179/
return (time.strftime("%Y%m%d", time.gmtime()),
time.strftime("%H%M%S", time.gmtime()),
time.strftime("%Y%m%d", time.localtime()),
...
Discuz轻松生成sitemaps.xml网站地图 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ncoding=\"UTF-8\"?>\n";
$sitemap.="<urlset\n";
$sitemap.="xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\"\n";
$sitemap.="xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
$sitemap.="xsi:schemaLocation=\"http://www.sitemaps.org/schemas/sitemap/0.9\n";
$sitemap.="http://www.sitema...
With CSS, use “…” for overflowed block of multi-lines
...
redo the gradient as a standalone PNG image or DirectX filter.
http://www.mobify.com/dev/multiline-ellipsis-in-pure-css
the css:
p { margin: 0; padding: 0; font-family: sans-serif;}
.ellipsis {
overflow: hidden;
height: 200px;
line-height: 25px;
margin: 20px;
border: 5px ...
Serializing class instance to JSON
... a limited set of object types by default, all built-in types. List here: https://docs.python.org/3.3/library/json.html#encoders-and-decoders
One good solution would be to make your class inherit from JSONEncoder and then implement the JSONEncoder.default() function, and make that function emit th...
Fastest method to escape HTML tags as HTML entities?
...ds based on 'replace', see http://jsperf.com/htmlencoderegex/35 .
Source: https://stackoverflow.com/a/17546215/698168
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Hidden features of Eclipse [closed]
...s), which is great for detecting bugs early.
See more useful templates at www.tarantsov.com/eclipse/templates/. I won't list them all here because there are many, and because I often add new ones.
Completion
A few code completion tricks:
camel case support mentioned in another answer: type cTM,...
any tool for java object to object mapping? [closed]
...
Another one is Orika - https://github.com/orika-mapper/orika
Orika is a Java Bean mapping framework that recursively copies (among other capabilities) data from one object to another. It can be very useful when developing multi-layered application...
how to check the jdk version used to compile a .class file [duplicate]
...
You can try jclasslib:
https://github.com/ingokegel/jclasslib
It's nice that it can associate itself with *.class extension.
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