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Get form data in ReactJS
...se React's two-way databinding helper mixin to achieve the same thing, but now it's deprecated in favor of setting the value and change handler (as above):
var ExampleForm = React.createClass({
mixins: [React.addons.LinkedStateMixin],
getInitialState: function() {
return {email: '', passwor...
Should I use string.isEmpty() or “”.equals(string)?
...
Thank you for the explanation. Now I know why to favor "".equals(str) over str.equals("")! I was always wondering why others use this so often, but didn't take null values into account. Great :-)
– Peter Wippermann
De...
GroupBy pandas DataFrame and select most common value
I have a data frame with three string columns. I know that the only one value in the 3rd column is valid for every combination of the first two. To clean the data I have to group by data frame by first two columns and select most common value of the third column for each combination.
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How to insert a newline in front of a pattern?
...
sed $'s/regexp/\\\n/g'
What happens here is: the entire sed command is now a C-style string, which means the backslash that sed requires to be placed before the new line literal should now be escaped with another backslash. Though more readable, in this case you won't be able to do shell string...
SVN (Subversion) Problem “File is scheduled for addition, but is missing” - Using Versions
...svn, "look, I added some files via my OS's default file manager, and right now, the stuff in this folder, is what I want the current state of this repo to be... now let it happen... don't tell me what I can and can't do with these files, but yes, keep track of it all for me."?
–...
“There was an error while performing this operation”
...ssue and resolved in exactly same way as you suggested and all works again now. in our case we upgraded server from windows 2012 to windows 2016.
– Davide Piras
Jan 12 '18 at 10:52
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Sphinx autodoc is not automatic enough
...a 5,000+ line project in Python. It has about 7 base modules. As far as I know, In order to use autodoc I need to write code like this for each file in my project:
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What is the MIME type for Markdown?
Does anyone know if there exists a MIME type for Markdown? I guess it is text/plain , but is there a more specific one?
4 ...
I can’t find the Android keytool
...r your certificate's MD5 fingerprint. Wtf is that, you might say. I don't know, but just do what I say and your Android app doesn't get hurt.
Go to Start>Run and type cmd to open up a command prompt. You need to navigate to the directory with the keytool.exe file, which might be in a slightly di...
C# DateTime to UTC Time without changing the time
...11 4:08:40 PM Local
6/1/2011 4:08:40 PM Utc
from
DateTime dt = DateTime.Now;
Console.WriteLine("{0} {1}", dt, dt.Kind);
DateTime ut = DateTime.SpecifyKind(dt, DateTimeKind.Utc);
Console.WriteLine("{0} {1}", ut, ut.Kind);
...