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MySQL how to join tables on two fields
... date)
perhaps you'll need to use INNEER JOIN or
where t2.id is not null
if you want results only matching both conditions
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SQL Server 2008: how do I grant privileges to a username?
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If you want to give your user all read permissions, you could use:
EXEC sp_addrolemember N'db_datareader', N'your-user-name'
That adds the default db_datareader role (read permission on all tables) to that user.
There's a...
Make page to tell browser not to cache/preserve input values
...tion=off affects "Session history caching", at least in Gecko. I will test if it works for what I need.
– queen3
Apr 23 '10 at 17:24
1
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iOS application: how to clear notifications?
I've an iOS application where some Push Notification are sent to. My problem is, that the messages/notifications stays in the Notification Center in iOS after then are tapped. How can I remove a notification for my application in the Notification Center next time the application opens?
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Idiomatic way to convert an InputStream to a String in Scala
...e why you want to get lines and then glue them all back together, though. If you can assume the stream's nonblocking, you could just use .available, read the whole thing into a byte array, and create a string from that directly.
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Format number to always show 2 decimal places
...'s returning a string...So this method is really only useful for display. If you want to perform further mathematical computations on the rounded value do not use toFixed().
– TWright
Oct 15 '15 at 7:19
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Java regular expression OR operator
...t.println(s.replaceAll("string(1|2)", "blah"));
has the same output. but if you just do this:
String s = "string1, string2, string3";
System.out.println(s.replaceAll("string1|2", "blah"));
you get:
blah, stringblah, string3
because you've said "string1" or "2".
If you don't want to capture ...
Is it OK to use Gson instance as a static field in a model bean (reuse)?
...o me. There is nothing in the GSON instance that makes it related to a specific instance of LoginSession, so it should be static.
GSON instances should be thread-safe, and there was a bug regarding that which was fixed.
sha...
Redis cache vs using memory directly
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Redis memory storage is quite efficient, and done in a separate process. If the application runs on a platform whose memory is garbage collected (node.js, java, etc ...), it allows handling a much bigger memory cache/store. In practice, very large heaps do not perform well with garbage collected l...
Simplest SOAP example
...';
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4) {
if (xmlhttp.status == 200) {
alert(xmlhttp.responseText);
// alert('done. use firebug/console to see network response');
...