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Select objects based on value of variable in object using jq
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Adapted from this post on Processing JSON with jq, you can use the select(bool) like this:
$ jq '.[] | select(.location=="Stockholm")' json
{
"location": "Stockholm",
"name": "Walt"
}
{
"location": "Stockholm",
"name": "Donald"
}
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What is the difference between sites-enabled and sites-available directory?
What is use of these two directories in apache2 and how can we do it?
3 Answers
3
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Why does parseInt yield NaN with Array#map?
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The callback function in Array.map has three parameters:
From the same Mozilla page that you linked to:
callback is invoked with three arguments: the value of the element, the index of the element, and the Array object being traversed...
Comparing arrays in JUnit assertions, concise built-in way?
Is there a concise, built-in way to do equals assertions on two like-typed arrays in JUnit? By default (at least in JUnit 4) it seems to do an instance compare on the array object itself.
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dplyr: “Error in n(): function should not be called directly”
I am attempting to reproduce one of the examples in the dplyr package but am getting this error message. I am expecting to see a new column n produced with the frequency of each combination. What am I missing? I triple checked that the package is loaded.
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Simulate airplane mode in iPhone Simulator
Is there any way to simulate airplane mode in the iPhone Simulator?
4 Answers
4
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Overwrite or override
It might seem to be a stupid question but I'm just so curious and want to use the correct term when talking about the issue. Couldn't find a similar question here so I decided to create a new one.
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Deprecated warning for Rails 4 has_many with order
...and needs to be replaced with lambda scope block as shown in the warning you've posted in the question. Another point to note is that this scope block needs to be passed before any other association options such as dependent: :destroy etc.
Give this a try:
has_many :contents, -> { order(:po...
Webstorm: “Cannot Resolve Directory”
This is starting to bug me and I'd either like it turned off or fixed. So Webstorm has a sweet feature in it's HTML parser that will attempt to resolve directories in strings that are supposed to reference a file in your project. For example:
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Fetch first element which matches criteria
...to get first element that matches a criteria in a stream? I've tried this but doesn't work
3 Answers
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