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Output array to CSV in Ruby
It's easy enough to read a CSV file into an array with Ruby but I can't find any good documentation on how to write an array into a CSV file. Can anyone tell me how to do this?
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Virtual Memory Usage from Java under Linux, too much memory used
...ory-map a JAR, you can access the files within it very efficiently (versus reading it from the start each time). The Sun JVM will memory-map all JARs on the classpath; if your application code needs to access a JAR, you can also memory-map it.
Per-thread data for two threads. The 1M block is the thr...
When to use Vanilla JavaScript vs. jQuery?
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this.disabled to get the disabled state of an input Thanks @Tim Down
this.readOnly to get the readOnly state of an input Thanks @Tim Down
this.href against an <a> element to get its href
this.hostname against an <a> element to get the domain of its href
this.pathname against an <a>...
Portable way to get file size (in bytes) in shell?
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If I'm not mistaken, though, wc in a pipeline must read() the entire stream to count the bytes. The ls/awk solutions (and similar) use a system call to get the size, which should be linear time (versus O(size))
– jmtd
May 7 '11 at 16:40...
Download file from web in Python 3
...ting a program that will download a .jar (java) file from a web server, by reading the URL that is specified in the .jad file of the same game/application. I'm using Python 3.2.1
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In Python, how do I read the exif data for an image?
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You can also use the ExifRead module:
import exifread
# Open image file for reading (binary mode)
f = open(path_name, 'rb')
# Return Exif tags
tags = exifread.process_file(f)
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HTML img tag: title attribute vs. alt attribute?
...and there are non-visual browsers for the blind; speech features in safari read the page, including alt attributes from images; search engine optimization; etc. lots of good reasons not to assume 100% image display.
– jwl
May 16 '09 at 13:19
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What is a “web service” in plain English?
I've been reading about "web services" here on SO, on Wikipedia, Google, etc., and I don't quite understand what they are. What is the plain English definition/description?
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What are Transient and Volatile Modifiers?
...es to the field should always be synchronously flushed to memory, and that reads of the field should always read from memory. This means that fields marked as volatile can be safely accessed and updated in a multi-thread application without using native or standard library-based synchronization. S...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...用到libeasy内置的工作线程池。libeasy采用one event loop per thread的模式，即每个线程一个event loop，
内存资源每连接自管理，连接之间的资源互不干涉。每个连接(easy_connection_t)上有可以有多个消息(easy_message_t)，通过链表连起来，每...