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What version of javac built my jar?
...essarily know which JDK release built a given class file, but you can find out the byte code class version of the class file contained in a jar.
Yes, this kinda sucks, but the first step is to extract one or more classes from the jar. For example:
$ jar xf log4j-1.2.15.jar
On Linux, Mac OS X or Win...
how to draw directed graphs using networkx in python?
...
Fully fleshed out example with arrows for only the red edges:
import networkx as nx
import matplotlib.pyplot as plt
G = nx.DiGraph()
G.add_edges_from(
[('A', 'B'), ('A', 'C'), ('D', 'B'), ('E', 'C'), ('E', 'F'),
('B', 'H'), ('B'...
Hidden Features of ASP.NET [closed]
...
Really? I was about to install a fake SMTP Server, like Dumbster. I hidden gem.
– Eduardo Molteni
Sep 18 '08 at 11:15
2
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Where does forever store console.log output?
...
Forever takes command line options for output:
-l LOGFILE Logs the forever output to LOGFILE
-o OUTFILE Logs stdout from child script to OUTFILE
-e ERRFILE Logs stderr from child script to ERRFILE
For example:
forever start -o out.log -e err...
How can I get zoom functionality for images?
... there a common way to show a big image and enable the user to zoom in and out and pan the image?
13 Answers
...
PostgreSQL return result set as JSON array?
...:3,"b":"value3"}]
9.3 and up
The json_agg function produces this result out of the box. It automatically figures out how to convert its input into JSON and aggregates it into an array.
SELECT json_agg(t) FROM t
There is no jsonb (introduced in 9.4) version of json_agg. You can either aggregate...
Java Byte Array to String to Byte Array
...99};
String s1 = Arrays.toString(b1);
String s2 = new String(b1);
System.out.println(s1); // -> "[97, 98, 99]"
System.out.println(s2); // -> "abc";
As you can see, s1 holds the string representation of the array b1, while s2 holds the string representation of the bytes contai...
Renaming a virtualenv folder without breaking it
...OTE: ENV is the name of the virtual environment and you must run this from outside the ENV directory.
This will make some of the files
created by setuptools or distribute
use relative paths, and will change
all the scripts to use
activate_this.py instead of using the
location of the P...
adb server version doesn't match this client
...ou using Genymotion for a virtual device?
if yes this error probably came out because ADB from Genymotion conflicted with your ADB from Android SDK(using same port number), to fix this simply go to settings => choose ADB tab => click on the option Use custom Android SDK Tools and set your SDK...
Launching an application (.EXE) from C#?
...
Use System.Diagnostics.Process.Start() method.
Check out this article on how to use it.
Process.Start("notepad", "readme.txt");
string winpath = Environment.GetEnvironmentVariable("windir");
string path = System.IO.Path.GetDirectoryName(
System.Windows.Forms.App...