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Why do people use Heroku when AWS is present? What distinguishes Heroku from AWS? [closed]
...s a Service (IAAS)
Versatile - has many products such as EC2, LAMBDA, EMR, etc.
Can use a Dedicated instance for more control over the architecture, such as choosing the OS, software version, etc. There is more than one backend layer.
Elastic Beanstalk is a feature similar to Heroku's PAAS.
Can use...
Good tutorials on XMPP? [closed]
...ce articles explaining the basics and terminology - stanzas, IQ, presence, etc, etc. Even the Wikipedia page misses this, unsurprisingly the open-source projects assume you know these things before you start digging into the code.
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What are the typical reasons Javascript developed on Firefox fails on IE? [closed]
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Please feel free to update this list if you see any errors/omissions etc.
Note: IE9 fixes many of the following issues, so a lot of this only applies to IE8 and below and to a certain extent IE9 in quirks mode. For example, IE9 supports SVG, <canvas>, <audio> and <video> na...
Similarity String Comparison in Java
...ccard similarity
Dice's coefficient
Matching similarity
Overlap similarity
etc etc
A good summary ("Sam's String Metrics") can be found here (original link dead, so it links to Internet Archive)
Also check these projects:
Simmetrics
jtmt
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MySQL复制的概述、安装、故障、技巧、工具 - 数据库(内核) - 清泛网 - 专注...
...户作为复制账号。
然后设置主服务器配置文件（缺省：/etc/my.cnf）：
[mysqld]
server_id = 100
log_bin = mysql-bin
log_bin_index = mysql-bin.index
sync_binlog = 1
innodb_flush_log_at_trx_commit = 1
innodb_support_xa = 1
注：一定要保证主从服务器各自的s...
How can I search Git branches for a file or directory?
...lent answer @webmat! If you want to see where it's been deleted / created /etc, you can use git log --all --stat -- **/my_file.png, that way you won't have to guess if you're checking it out from a commit that deleted it.
– eacousineau
Oct 4 '13 at 4:55
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JUnit test for System.out.println()
...e command line option (asserting that -version outputs the version string, etc etc)
Edit:
Prior versions of this answer called System.setOut(null) after the tests; This is the cause of NullPointerExceptions commenters refer to.
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Adding images or videos to iPhone Simulator
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The simplest way to get images, videos, etc onto the simulator is to drag and drop them from your computer onto the simulator. This will cause the Simulator to open the Photos app and start populating the library.
If you want a scriptable method, read on.
Note ...
What's the 'environment' task in Rake?
...ironment, giving the relevant task access to things like classes, helpers, etc. Without the :environment, you won't have access to any of those extras.
Also => :environment itself does not make available any environment-related variables, e.g. environment, @environment, RAILS_ENV, etc.
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How to create an array from a CSV file using PHP and the fgetcsv function
...n someone kindly provide a code to create an array from a CSV file using fgetcsv?
14 Answers
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