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How to check if object has any properties in JavaScript?
...ws:
for(var prop in ad) {
if (ad.hasOwnProperty(prop)) {
// handle prop as required
}
}
It is important to use the hasOwnProperty() method, to determine whether the object has the specified property as a direct property, and not inherited from the object's prototype chain.
Edit
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How to make a Bootstrap accordion collapse when clicking the header div?
... to do is to to use...
data-toggle="collapse"
data-target="#ElementToExpandOnClick"
...on the element you want to click to trigger the collapse/expand effect.
The element with data-toggle="collapse" will be the element to trigger the effect.
The data-target attribute indicates the element tha...
What is the advantage of using heredoc in PHP? [closed]
What is the advantage of using heredoc in PHP, and can you show an example?
5 Answers
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How to prune local tracking branches that do not exist on remote anymore
...es.
This line should do the trick (requires bash or zsh, won't work with standard Bourne shell):
git branch -r | awk '{print $1}' | egrep -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk '{print $1}' | xargs git branch -d
This string gets the list of remote branches and passes it into egrep...
Base64 Java encode and decode a string [duplicate]
I want to encode a string into base64 and transfer it through a socket and decode it back.
6 Answers
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What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]
...ecutionEngineError exception. I spent a good 30 minutes trying to isolate and minimize the culprit sample. Compile this using Visual Studio 2012 as a console app:
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SELECT * FROM X WHERE id IN (…) with Dapper ORM
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Marko, that IS important. And, if you are doing it that way, you might consider finding another way of querying your data, such as doing a join or an anti-join rather than passing a list of ids. The IN clause is not the most highly performing query a...
What's the difference between ISO 8601 and RFC 3339 Date Formats?
ISO 8601 and RFC 3339 seem to be two formats that are common the web. Should I use one over the other? Is one just an extension? Do I really need to care that bad?
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ASP.NET Identity DbContext confusion
...ay you can have the context be aware of any relations between your classes and the IdentityUser and Roles of the IdentityDbContext.
There is very little overhead in the IdentityDbContext, it is basically a regular DbContext with two DbSets. One for the users and one for the roles.
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What __init__ and self do on Python?
I'm learning the Python programming language and I've came across something I don't fully understand.
18 Answers
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