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How to prevent ifelse() from turning Date objects into numeric objects
...1:5], format: "2010-12-31" "2011-01-02" "2011-01-03" "2011-01-04" "2011-01-05"
dplyr::if_else
From dplyr 0.5.0 release notes:
[if_else] have stricter semantics that ifelse(): the true and false arguments must be the same type. This gives a less surprising return type, and preserves S3 vectors lik...
Why does AuthorizeAttribute redirect to the login page for authentication and authorization failures
...utomatically pick it up instead of MVC's standard one. This results in an error: The type or namespace 'Authorize' could not be found ( are you missing a directive or an assembly reference?) Both using System.Web.Mvc; and the namespace for my custom AuthorizeAttribute class are referenced in the c...
Link and execute external JavaScript file hosted on GitHub
...al JavaScript file to a GitHub raw version my test file stops working. The error is:
15 Answers
...
Reverse colormap in matplotlib
...ks:
my_cmap
<matplotlib.colors.LinearSegmentedColormap at 0xd5a0518>
my_cmap_r = reverse_colourmap(my_cmap)
fig = plt.figure(figsize=(8, 2))
ax1 = fig.add_axes([0.05, 0.80, 0.9, 0.15])
ax2 = fig.add_axes([0.05, 0.475, 0.9, 0.15])
norm = mpl.colors.Normalize(vmin=0, vmax=1)
cb1 = mpl...
Add a properties file to IntelliJ's classpath
...he artifact. Intellij will give you the shortcut shown below. It will show errors in the red part at the bottom and a 'red lightbulb' that when clicked shows you an option to add the files to the artifact. You can also go to the 'artifacts' section and add the files to the artifacts manually.
...
What are the key differences between Apache Thrift, Google Protocol Buffers, MessagePack, ASN.1 and
...ol Buffers always explicitly encodes fields by numbers, and it is never an error at the library level if there are extra fields, and missing fields are not an error if they are marked optional or explicit. Thus all protocol buffers messages have EXTENSIBILITY IMPLIED.
– Kevin C...
Why doesn't String switch statement support a null case?
...that is, String or a boxed primitive type or an enum type, then a run-time error will occur if the expression evaluates to null at run time. In the judgment of the designers of the Java programming language, this is a better outcome than silently skipping the entire switch statement or choosing to e...
Hashing a string with Sha256
...ke abcdefghi2013 for some reason it gives different results and results in errors in my login module.
Then I tried modifying the code the same way as suggested by Quuxplusone and changed the encoding from ASCII to UTF8 then it finally worked!
static string sha256(string randomString)
{
var cryp...
Make a div into a link
...00%;
height:100%;
top:0;
left: 0;
z-index: 1;
/* fixes overlap error in IE7/8,
make sure you have an empty gif */
background-image: url('empty.gif');
}
It will now cover the panel, and as it's inside an <A> tag, it's a clickable link
give any other links inside the pan...
Setting the correct encoding when piping stdout in Python
...citly print with a given encoding every time. That would be repetitive and error-prone.
A better solution is to change sys.stdout at the start of your program, to encode with a selected encoding. Here is one solution I found on Python: How is sys.stdout.encoding chosen?, in particular a comment by ...