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How to write trycatch in R
...vel/library/base/html/connections.html",
"http://en.wikipedia.org/wiki/Xz",
"xxxxx"
)
readUrl <- function(url) {
out <- tryCatch(
{
# Just to highlight: if you want to use more than one
# R expression in the "try" part then you'll have to
...
Command line progress bar in Java
... job done.
The same kind of progress bar you would see using wget under unix.
Is this possible?
15 Answers
...
Groovy: what's the purpose of “def” in “def x = 0”?
...ng piece of code (taken from the Groovy Semantics Manual page ), why prefix the assignment with the keyword def ?
6 Answe...
Favicon not showing up in Google Chrome [duplicate]
...vicon without cache (thanks @Stanislav).
<link rel="icon" type="image/x-icon" href="favicon.ico?v=2" />
Favicon Usage
How did you import the favicon? How you should add it.
Normal favicon:
<link rel="icon" href="favicon.ico" type="image/x-icon" />
<link rel="shortcut icon" hre...
How do I determine k when using k-means clustering?
...
You can maximize the Bayesian Information Criterion (BIC):
BIC(C | X) = L(X | C) - (p / 2) * log n
where L(X | C) is the log-likelihood of the dataset X according to model C, p is the number of parameters in the model C, and n is th...
Test if a property is available on a dynamic variable
...cification.
So you should actually try to access the member and catch an exception, if it fails:
dynamic myVariable = GetDataThatLooksVerySimilarButNotTheSame();
try
{
var x = myVariable.MyProperty;
// do stuff with x
}
catch (RuntimeBinderException)
{
// MyProperty doesn't exist
}
...
How to use string.replace() in python 3.x
The string.replace() is deprecated on python 3.x. What is the new way of doing this?
8 Answers
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What are the “standard unambiguous date” formats for string-to-date conversion in R?
...d/or abbreviations, as the conversion will depend on your locale (see the examples in ?strptime and read ?LC_TIME).
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How to Query an NTP Server using C#?
...got deleted (It was a link to a Google code search results that no longer exist), I figured I could answer this question for future reference :
public static DateTime GetNetworkTime()
{
//default Windows time server
const string ntpServer = "time.windows.com";
// NTP message size - 16 ...
OS X: equivalent of Linux's wget
How can I do an HTTP GET from a Un*x shell script on a stock OS X system? (installing third-party software is not an option, for this has to run on a lot of different systems which I don't have control on).
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