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Can't install Ruby under Lion with RVM – GCC issues
...nt versions of XCode you need to install the command-line tools separately from the XCode menu -> Preferences -> Downloads -> Components. This is a pre-requisite for doing any compiling with XCode on the command-line, not just Ruby.
Note 2: If something doesn't work after following the ste...
Is LINQ to SQL Dead or Alive?
...e friends with LINQ to SQL, it appears as though MS is pulling the rug out from under it.
16 Answers
...
How to return a result (startActivityForResult) from a TabHost Activity?
...ion e) {
// Empty
}
} else {
mParent.finishFromChild(this);
}
}
So my solution is to set result to the parent activity if present, like that:
Intent data = new Intent();
[...]
if (getParent() == null) {
setResult(Activity.RESULT_OK, data);
} else {
get...
How to check sbt version?
...oject and its subprojects.
$ sbt sbtVersion
[info] Loading global plugins from /Users/jacek/.sbt/0.13/plugins
[info] Updating {file:/Users/jacek/.sbt/0.13/plugins/}global-plugins...
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] Done updating.
[info] Loading project definition from /Use...
Increasing the maximum number of TCP/IP connections in Linux
...ort range defines the maximum number of outbound sockets a host can create from a particular I.P. address. The fin_timeout defines the minimum time these sockets will stay in TIME_WAIT state (unusable after being used once).
Usual system defaults are:
net.ipv4.ip_local_port_range = 32768 61000
n...
How to get response status code from jQuery.ajax?
...the following code, all I am trying to do is to get the HTTP response code from a jQuery.ajax call. Then, if the code is 301 (Moved Permanently), display the 'Location' response header:
...
Can Json.NET serialize / deserialize to / from a stream?
...ed answer code. A current alternative is:
public static object DeserializeFromStream(Stream stream)
{
var serializer = new JsonSerializer();
using (var sr = new StreamReader(stream))
using (var jsonTextReader = new JsonTextReader(sr))
{
return serializer.Deserialize(jsonTex...
Maximum and Minimum values for ints
...mum value with -sys.maxint - 1 as shown here.
Python seamlessly switches from plain to long integers once you exceed this value. So most of the time, you won't need to know it.
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How can you hide database output in Rails console?
In newer version of Rails, I'm guessing from 3 up, database queries are output to the console. This is useful most of the time, but how can you hide it when you do not want to see it?
...
Reading a binary file with python
...o have something to unpack is pretty trivial:
import struct
data = open("from_fortran.bin", "rb").read()
(eight, N) = struct.unpack("@II", data)
This unpacks the first two fields, assuming they start at the very beginning of the file (no padding or extraneous data), and also assuming native byt...