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JPA or JDBC, how are they different?
...y a row/column matrix of values from one or more database tables, returned by your SQL query) into Java objects.
Now, to understand and use JDBC it's essential that you have some understanding and working knowledge of SQL. With that also comes a required insight into what a relational database is, ...
Is there a .NET equivalent to Apache Hadoop? [closed]
...mebody wanted to create a 'MySpace killer' they are likely to be satisfied by using it in-house (without redistribution of either binary or source). I guess using AGPL (Affero GPL) would be more appropriate to fix a loophole with public web services using it and not distributing any source... Sad an...
Should a .sln be committed to source control?
...or anyone using Visual Studio features like Go To Definition/Declaration.
By default, they don't contain absolute paths or any other machine-specific artifacts. (Unfortunately, some add-in tools don't properly maintain this property, for instance, AMD CodeAnalyst.) If you're careful to use relative...
Determine which JAR file a class is from
...
Yes. It works for all classes except classes loaded by bootstrap classloader. The other way to determine is:
Class klass = String.class;
URL location = klass.getResource('/' + klass.getName().replace('.', '/') + ".class");
As notnoop pointed out klass.getResource() method r...
How do you do a ‘Pause’ with PowerShell 2.0?
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/c Carries out the command specified by string and then terminates | out-null pipes the output to out-null, where you'll never see it If you want to see the "Press any key to continue..." message, remove the pipe. Also, this doesn't seem to work in PowerShel...
Best practice to run Linux service as a different user
...aemon --user=my_user my_cmd &>/dev/null &
This is implemented by wrapping the
process invocation with runuser -
more on this later.
Jonathan Leffler is right:
there is setuid in Python:
import os
os.setuid(501) # UID of my_user is 501
I still don't think you can setuid
from inside a ...
Dependency graph of Visual Studio projects
...ainst a 2010 project for C#, but you could probably tweak it really easily by looking at the XML inside a C++ project and adjusting the code :-)
– Danny Tuppeny
May 11 '13 at 10:24
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Why does appending “” to a String save memory?
...maller) String object, and throws away the reference to the String created by substring(), thus enabling garbage collection of this.
The important thing to realise is that substring() gives a window onto an existing String - or rather, the character array underlying the original String. Hence it w...
Copy object values in Visual Studio debug mode
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What exactly is meant by "the immediate window"?
– alex
Feb 12 '16 at 18:14
3
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Good tutorial for using HTML5 History API (Pushstate?) [closed]
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history.pushState() doesn't dispatch a popstate event or load a new page by itself. It was only meant to push state into history. This is an "undo" feature for single page applications. You have to manually dispatch a popstate event or use history.go() to navigate to the new state. The idea is tha...