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How to include (source) R script in other scripts
...check for something unique in your util.R code.
For example:
if(!exists("foo", mode="function")) source("util.R")
(Edited to include mode="function", as Gavin Simpson pointed out)
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improv...
Are C# events synchronous?
...l combined delegate
Here's what I did. The program I used:
public class Foo
{
// cool, it can return a value! which value it returns if there're multiple
// subscribers? answer (by trying): the last subscriber.
public event Func<int, string> OnCall;
private int val = 1;
...
Are HTML Image Maps still used?
Do people still use the old HTML Image Maps? The ones with:
9 Answers
9
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Reading binary file and looping over each byte
In Python, how do I read in a binary file and loop over each byte of that file?
12 Answers
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Can “using” with more than one resource cause a resource leak?
...e make that a little bit more clear. Suppose we have:
public sealed class Foo : IDisposable
{
private int handle = 0;
private bool disposed = false;
public Foo()
{
Blah1();
int x = AllocateResource();
Blah2();
this.handle = x;
Blah3();
}
...
Viewing a Deleted File in Git
...back and don't want to hunt for a revision, you can use (the file is named foo in this example; you can use a full path):
git show $(git rev-list --max-count=1 --all -- foo)^:foo
The rev-list invocation looks for all the revisions of foo but only lists one. Since rev-list lists in reverse chronol...
Undefined reference to static constexpr char[]
...
Add to your cpp file:
constexpr char foo::baz[];
Reason: You have to provide the definition of the static member as well as the declaration. The declaration and the initializer go inside the class definition, but the member definition has to be separate.
...
Applicatives compose, monads don't
What does the above statement mean? And when is one preferable to other?
5 Answers
5
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Elasticsearch query to return all records
...
I think lucene syntax is supported so:
http://localhost:9200/foo/_search?pretty=true&q=*:*
size defaults to 10, so you may also need &size=BIGNUMBER to get more than 10 items. (where BIGNUMBER equals a number you believe is bigger than your dataset)
BUT, elasticsearch documen...
MySQL search and replace some text in a field
...name and field in question:
UPDATE table_name SET field = REPLACE(field, 'foo', 'bar') WHERE INSTR(field, 'foo') > 0;
REPLACE (string functions)
INSTR (string functions)
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