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Visual Studio or Resharper functionality for placement of using directives
I like to put my using directives inside the current namespace, and not outside as VS and Resharper per default puts them.
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How can I determine if a String is non-null and not only whitespace in Groovy?
Groovy adds the isAllWhitespace() method to Strings, which is great, but there doesn't seem to be a good way of determining if a String has something other than just white space in it.
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How can I have linked dependencies in a git repo?
In my scripts, I often use libraries (mine or others') that have their own repos. I don't want to duplicate those in my repo and get stuck with updating them every time a new version comes out.
However, when somebody clones the repo, it should still work locally and not have broken links.
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To find whether a column exists in data frame or not
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Assuming that the name of your data frame is dat and that your column name to check is "d", you can use the %in% operator:
if("d" %in% colnames(dat))
{
cat("Yep, it's in there!\n");
}
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What does a space mean in a CSS selector? i.e. What is the difference between .classA.classB and .cl
...mon, and would target any type of element of class "classB" that is nested inside any type of element of class "classA".
.classA .classB {
border: 1px solid; }
It would work, for example, on:
<div class="classA">
<p class="classB">asdf</p>
</div>
This one, however, ...
How can I round to whole numbers in JavaScript?
I have the following code to calculate a certain percentage:
5 Answers
5
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In CoffeeScript how do you append a value to an Array?
What is the prescribed way to append a value to an Array in CoffeeScript? I've checked the PragProg CoffeeScript book but it only discusses creating, slicing and splicing, and iterating, but not appending.
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URL: Username with @
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Nice. This also works if your password contains an @ too, which is increasingly likely with random passwords created by password managers.
– Adambean
Nov 4 '18 at 23:19
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Sending Email in Android using JavaMail API without using the default/built-in app
I am trying to create a mail sending application in Android.
25 Answers
25
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How to return multiple lines JSX in another return statement in React?
Single line works fine
7 Answers
7
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