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How to set or change the default Java (JDK) version on OS X?
... Runtime Environment (build 1.6.0_65-b14-462-11M4609)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)
Add the export JAVA_HOME… line to your shell’s init file.
For Bash (as stated by antonyh):
export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)
For Fish (as stated by ormurin)...
Name node is in safe mode. Not able to leave
...error for your command as -safemode isn't a sub-command for hadoop fs, but it is of hadoop dfsadmin.
Also after the above command, I would suggest you to once run hadoop fsck so that any inconsistencies crept in the hdfs might be sorted out.
Update:
Use hdfs command instead of hadoop command for ...
How to do Base64 encoding in node.js?
...d
Buffers are a global object, so no require is needed. Buffers created with strings can take an optional encoding parameter to specify what encoding the string is in. The available toString and Buffer constructor encodings are as follows:
'ascii' - for 7 bit ASCII data only. This encoding met...
How do I watch a file for changes?
I have a log file being written by another process which I want to watch for changes. Each time a change occurs I'd like to read the new data in to do some processing on it.
...
What's the cleanest way of applying map() to a dictionary in Swift?
...4 includes a mapValues(_:) method which constructs a copy of a dictionary with the same keys, but different values. It also includes a filter(_:) overload which returns a Dictionary, and init(uniqueKeysWithValues:) and init(_:uniquingKeysWith:) initializers to create a Dictionary from an arbitrary s...
clang error: unknown argument: '-mno-fused-madd' (python package installation failure)
...l psycopg2should work.
I had the same when trying to pip install lxml.
Edit: if you are installing as superuser (which will likely be the case if you are trying to append to /Library/Python/2.7/site-packages, the native Apple factory-installed Python distribution which ships with OS X, rather than...
SQL Server - Create a copy of a database table and place it in the same database?
I have a table ABC in a database DB. I want to create copies of ABC with names ABC_1, ABC_2, ABC_3 in the same DB. How can I do that using either Management Studio (preferably) or SQL queries ?
...
Detect URLs in text with JavaScript
...most anything is a valid URL. There
are some punctuation rules for
splitting it up. Absent any
punctuation, you still have a valid
URL.
Check the RFC carefully and see if you
can construct an "invalid" URL. The
rules are very flexible.
For example ::::: is a valid URL.
...
What's the dSYM and how to use it? (iOS SDK)
...SYM files. I guess this is a debugging related file, but I don't know what it is, and how to use it.
2 Answers
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Conveniently Declaring Compile-Time Strings in C++
...rings during compile-time in C++ has several useful applications. Although it is possible to create compile-time strings in C++, the process is very cumbersome, as the string needs to be declared as a variadic sequence of characters, e.g.
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