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cannot download, $GOPATH not set
...
[Update: as of Go 1.8, GOPATH defaults to $HOME/go, but you may still find this useful if you want to understand the GOPATH layout, customize it, etc.]
The official Go site discusses GOPATH and how to lay out a workspace directory.
export GOPATH="$HOME/your-workspace-...
'Java' is not recognized as an internal or external command
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You need to configure your environment variables, JAVA_HOME and PATH.
JAVA_HOME must contain the path to java, and you should add %JAVA_HOME%\bin to PATH
Alternatively, you can simply add to your PATH the whole path to the bin folder, without the JAVA_HOME ...
How to specify JVM maximum heap size “-Xmx” for running an application with “run” action in SBT?
My application does large data arrays processing and needs more memory than JVM gives by default. I know in Java it's specified by "-Xmx" option. How do I set SBT up to use particular "-Xmx" value to run an application with "run" action?
...
How do I configure emacs for editing HTML files that contain Javascript?
...ina/multi-web-mode
which may be more easily configurable than the already mentioned multi-mode.
You just configure your preferred modes in your .emacs file like this:
(require 'multi-web-mode)
(setq mweb-default-major-mode 'html-mode)
(setq mweb-tags
'((php-mode "<\\?php\\|<\\? \\|<\\...
How to create a file in memory for user to download, but not through server?
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This is not a cross browser solution but definitely something worth looking at. For example IE limits support to data uri. IE 8 limits size to 32KB and IE 7 and lower doesn't support at all.
– Darin Dimitrov
Sep 8 '10 at 6:32
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Git stash: “Cannot apply to a dirty working tree, please stage your changes”
...trying to apply changes I stashed earlier with git stash pop and get the message:
11 Answers
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Python nested functions variable scoping [duplicate]
...error:
UnboundLocalError: local variable '_total' referenced before assignment
This problem is caused by this line:
_total += PRICE_RANGES[key][0]
The documentation about Scopes and Namespaces says this:
A special quirk of Python is that – if no global statement is in effect – assignm...
JSON.NET Error Self referencing loop detected for type
... "$ref":"2"
},
"Id":2,
"Name":"Yogurt"
},
{
"$ref":"1"
}
],
"Id":1,
"Name":"Diary"
},
"Id":1,
"Name":"Whole Milk"
},
{
"$ref":"3"
}
]
The $...
'is' versus try cast with null check
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{
var myObjRef = (MyType)myObj.myProp; // needs to be cast a second time
// before using it as a MyType
...
}
to this:
var myObjRef = myObj.myProp as MyType; // only one cast
if (myObjRef != null)
{
// myObjRef is already MyType and doesn't ne...
Is there still any reason to learn AWK?
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I think it depends on the environment you find yourself in. If you are a *nix person, then knowing awk is a Good Thing. The only other scripting environment that can be found on virtually every *nix is sh. So while grep, sed, etc can surely replace awk on a ...