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C# binary literals
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C# 7.0 supports binary literals (and optional digit separators via underscore characters).
An example:
int myValue = 0b0010_0110_0000_0011;
You can also find more information on the Roslyn GitHub page.
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Entity Framework rollback and remove bad migration
I'm using EF 6.0 for my project in C# with manual migrations and updates. I have about 5 migrations on the database, but I realised that the last migration was bad and I don't want it. I know that I can rollback to a previous migration, but when I add a new (fixed) migration and run Update-Database,...
Can I change multiplier property for NSLayoutConstraint?
I created two views in one superview, and then added constraints between views:
13 Answers
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How to allow only numeric (0-9) in HTML inputbox using jQuery?
...ations, non-typeable keys, the caret position, different keyboard layouts, and all browsers since IE 9):
// Restricts input for the set of matched elements to the given inputFilter function.
(function($) {
$.fn.inputFilter = function(inputFilter) {
return this.on("input keydown keyup mousedow...
Why does Git treat this text file as a binary file?
...most but not completely not wrong. Git did have inspected the actual files and have seen 'funny' characters there. However it does not "think" UTF-16 is binary. It is binary, because text is defined as ASCII-based (that's the only thing the built-in diff will give usable results for) and UTF-16 is n...
Using a BOOL property
...s used with heap allocated NSObjects like NSString*, NSNumber*, UIButton*, and etc, because memory managed accessors are created for free. When you create a BOOL, the value is always allocated on the stack and does not require any special accessors to prevent memory leakage. isWorking is simply th...
Installing older version of R package
I am trying to use Rpy2 and ggplot2 but I get an error. After some searching for the error online, I found that the error occurs because there are changes in the ggplot2 package that are not yet reflected in Rpy2 (for example, see this post (Edit: Link is now dead)).
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CSS z-index paradox flower
...://jsfiddle.net/Kx2k5/1/
(successfully tested on Fx27, Ch33, IE9, Sf5.1.10 and Op19)
CSS
.item {
/* include borders on width and height */
-webkit-box-sizing : border-box;
-moz-box-sizing : border-box;
box-sizing : border-box;
...
}
.i1:after {
content: "";
/*...
How to record webcam and audio using webRTC and a server-based Peer connection
I would like to record the users webcam and audio and save it to a file on the server. These files would then be able to be served up to other users.
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Selecting multiple columns in a pandas dataframe
...1 = df[['a', 'b']]
Alternatively, if it matters to index them numerically and not by their name (say your code should automatically do this without knowing the names of the first two columns) then you can do this instead:
df1 = df.iloc[:, 0:2] # Remember that Python does not slice inclusive of the ...