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What is an ORM, how does it work, and how should I use one? [closed]
...ok FROM library WHERE author = 'Linus'";
data = query(sql); // I over simplify ...
while (row = data.next())
{
book = new Book();
book.setAuthor(row.get('author');
book_list.add(book);
}
With an ORM library, it would look like this:
book_list = BookTable.query(author="Linus");
Th...
Error: Could not create the Java Virtual Machine Mac OSX Mavericks
... first line in which it says its an invalid argument. Java -version works now. Its just I installed something called node.js and to check its version it just requires -v. I thought it may have been a generic argument.
– user1574598
Sep 1 '14 at 16:08
...
Gradle does not find tools.jar
...ith system looking at the JRE folder i.e.
D:\Program Files\Java\jre8\bin. If we look in there, there is no Tools.jar, hence the error.
You need to find where the JDK is, in my case: D:\Program Files\Java\jdk1.8.0_11, and if you look in the lib directory, you will see Tools.jar.
What I did I crea...
How to remove non-alphanumeric characters?
...
Here's an example if you want to include the hyphen as an allowed character. I needed this because I needed to strip out disallowed characters from a Moodle username, based on email addresses: preg_replace("/[^a-z0-9_.@\-]/", '', $string);
...
Have nginx access_log and error_log log to STDOUT and STDERR of master process
...
Edit: it seems nginx now supports error_log stderr; as mentioned in Anon's answer.
You can send the logs to /dev/stdout. In nginx.conf:
daemon off;
error_log /dev/stdout info;
http {
access_log /dev/stdout;
...
}
edit: May need to run ln...
How to make the 'cut' command treat same sequental delimiters as one?
...ed any variable) can also be used more than once in a single read command, if we don't care what goes into it. It can be anything, it is just that it somehow became standard instead of junk_var or whatever :)
– fedorqui 'SO stop harming'
Nov 15 '17 at 7:37
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Is there a way to iterate over a dictionary?
I know NSDictionaries as something where you need a key in order to get a value . But how can I iterate over all keys and values in a NSDictionary , so that I know what keys there are, and what values there are? I know there is something called a for-in-loop in JavaScript . Is there som...
Specifying an Index (Non-Unique Key) Using JPA
...mn(name = "name", nullable = false)
private String name;
}
Update: If you ever need to create and index with two or more columns you may use commas. For example:
@Entity
@Table(name = "company__activity",
indexes = {@Index(name = "i_company_activity", columnList = "activity_id,co...
Can I use assert on Android devices?
... the JUnit Assert.
You can do
import static junit.framework.Assert.*;
now you can use all the functions like assertTrue, assertEquals, assertNull that are provided in the junit framework.
Be careful not to import the Junit4 framework through eclipse, that would be the org.junit package. You h...
How can i tell if an object has a key value observer attached
if you tell an objective c object to removeObservers: for a key path and that key path has not been registered, it cracks the sads. like -
...