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MySQL how to join tables on two fields
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180
JOIN t2 ON t1.id=t2.id AND t1.date=t2.date
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how to check redis instance version?
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310
$ redis-server --version
gives you the version.
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Where are environment variables stored in registry?
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Here's where they're stored on XP through Server 2012 R2:
User Variables
HKEY_CURRENT_USER\Environment
System Variables
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment
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What is the difference between 'java', 'javaw', and 'javaws'?
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213
See Java tools documentation for:
java command1/javaw command2
The java tool launches a Jav...
How to disable word-wrap in Xcode 4 editor?
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answered Mar 11 '11 at 14:00
David HancockDavid Hancock
13.9k44 gold badges3737 silver badges4343 bronze badges
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Pass a variable into a partial, rails 3?
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edited Jun 26 '15 at 17:05
answered Jan 15 '11 at 16:13
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What character encoding should I use for a HTTP header?
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126
In short: Only ASCII is guaranteed to work. Some non-ASCII bytes are allowed for backwards com...
How do I pass the this context to a function?
...rguments to your function and .apply() needs an array.
myfunc.call(obj_a, 1, 2, 3);
myfunc.apply(obj_a, [1, 2, 3]);
Therefore, you can easily write a function hook by using the apply() method. For instance, we want to add a feature to jQuerys .css() method. We can store the original function refe...
Android: Specify two different images for togglebutton using XML
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Java: PrintStream to String?
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193
Use a ByteArrayOutputStream as a buffer:
import java.io.ByteArrayOutputStream;
import java.io...