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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
...an use infix with multiple parameters:
string substring (start, end) map (_ toInt) mkString ("<", ", ", ">")
Curried functions are hard to use with infix notation. The folding functions are a clear example of that:
(0 /: list) ((cnt, string) => cnt + string.size)
(list foldLeft 0) ((cnt...
Facebook Open Graph not clearing cache
...evelopers.facebook.com/tools/debug
Enter the URL following by fbrefresh=CAN_BE_ANYTHING
Examples:
http://www.example.com?fbrefresh=CAN_BE_ANYTHING
http://www.example.com?postid=1234&fbrefresh=CAN_BE_ANYTHING
OR visit:
http://developers.facebook.com/tools/debug/og/object?q=http://www.example....
How can I redirect HTTP requests made from an iPad?
....
sudo apt-get install libapache2-mod-proxy-html
sudo a2enmod proxy proxy_http proxy_html
sudo apache2ctl graceful
Then create a virtual host file, for example /etc/apache2/sites-available/my-proxy
Listen *:8080
<VirtualHost *:8080>
ProxyRequests On
<Proxy *>
Order ...
Append to a file in Go
...
This answers works in Go1:
f, err := os.OpenFile(filename, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
if err != nil {
panic(err)
}
defer f.Close()
if _, err = f.WriteString(text); err != nil {
panic(err)
}
...
Check if table exists and if it doesn't exist, create it in SQL Server 2008
...omething like this
IF NOT EXISTS (SELECT * FROM sys.objects
WHERE object_id = OBJECT_ID(N'[dbo].[YourTable]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[YourTable](
....
....
....
)
END
share
|...
What's the difference between the data structure Tree and Graph?
...nique for unrooted trees, but that is immaterial.
– j_random_hacker
Jul 7 '14 at 9:42
2
Not quite...
How to make a class conform to a protocol in Swift?
...ataSource : NSObject, UITableViewDataSource {
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "reuseIdentifier", for: indexPath)
// Configure the cell...
...
Why does one use dependency injection?
...ime.Now; }}
}
public class OfferWeasel
{
private readonly IGotTheTime _time;
public OfferWeasel(IGotTheTime time)
{
_time = time;
}
public Offer Create(Formdata formdata)
{
var offer = new Offer();
offer.LastUpdated = _time.Now;
return offer...
Java: int array initializes with nonzero elements
...bug will be fixed.
There is only advice at the moment: do not use JDK1.7.0_04 or later if you depend on JLS for newly declared arrays.
Update at October 5:
In the new Build 10 of the JDK 7u10 (early access) released at October 04, 2012, this bug was fixed at least for Linux OS (I did not test for...
Eclipse Workspaces: What for and why?
...and group the projects' sub-projects inside of it:
/projects/proj1/subproj1_1
/projects/proj1/subproj1_2
/projects/proj2/subproj2_1
Create a separate folder for your workspaces:
/eclipse-workspaces
Create workspaces for your projects:
/eclipse-workspaces/proj1
/eclipse-workspaces/proj2
...