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How to assign the output of a command to a Makefile variable
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shell is not a standard Make builtin command. This is a GNU Make builtin.
– Dereckson
Feb 18 '14 at 20:17
14
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WebRTC - scalable live stream broadcasting / multicasting
...ds its stream once, to Janus. Now Janus decodes the data using its own key and have access to the raw data (that it, RTP packets) and can emit back those packets to each attendee (Janus takes care of encryption for you). And since you put Janus on a server, it has a great upload bandwidth, so you wi...
Performance of static methods vs instance methods
...g to the performance characteristics of static methods vs instance methods and their scalability. Assume for this scenario that all class definitions are in a single assembly and that multiple discrete pointer types are required.
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How do I alter the position of a column in a PostgreSQL database table?
...e column order is either by
recreating the table, or by adding
columns and rotating data until you
reach the desired layout.
That's pretty weak, but in their defense, in standard SQL, there is no solution for repositioning a column either. Database brands that support changing the ordinal p...
Importing Maven project into Eclipse
...ect into eclipse. I found 2 ways to do it, one is through running from command line mvn eclipse:eclipse and another is to install maven eclipse plugin from eclipse. What is the difference between the both and which one is preferable?
The maven-eclipse-plugin is a Maven plugin and has always been t...
Upgrade Node.js to the latest version on Mac OS
...w I want to upgrade it to the latest Node.js v0.8.1. But after downloading and installing the latest package file from nodejs.org, I found that system is still using v0.6.16 instead of v0.8.1 when I typed "node -v" in a terminal. Is there any step that I have missed? Or, should I thoroughly uninstal...
How to change the output color of echo in Linux
I am trying to print a text in the terminal using echo command.
30 Answers
30
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Find value in an array
...ing that you're trying to find if a certain value exists inside the array, and if that's the case, you can use Array#include?(value):
a = [1,2,3,4,5]
a.include?(3) # => true
a.include?(9) # => false
If you mean something else, check the Ruby Array API
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How to get names of classes inside a jar file?
I have a JAR file and I need to get the name of all classes inside this JAR file. How can I do that?
12 Answers
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URL Fragment and 302 redirects
...2014-Jun-27:
RFC 7231, Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content, has been published as a PROPOSED STANDARD. From the Changelog:
The syntax of the Location header field has been changed to allow all
URI references, including relative references and fragments, along
with...