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How to install a gem or update RubyGems if it fails with a permissions error
...r steps to try to fix the problem, but now when I do irb or ruby -v, I get command not found. What's going on and is there a fix" and this just adds more weight to why people shouldn't use sudo or chown. Sigh....
– the Tin Man
Mar 24 '14 at 15:41
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SQL - The conversion of a varchar data type to a datetime data type resulted in an out-of-range valu
...his link for conversion formats and further reading.
https://www.w3schools.com/sql/func_sqlserver_convert.asp
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MongoDB relationships: embed or reference?
I'm new to MongoDB--coming from a relational database background. I want to design a question structure with some comments, but I don't know which relationship to use for comments: embed or reference ?
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How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?
...uilt using the new Metro style of apps for windows 8, and would like it to communicate with a .NET application running on the desktop on the same local machine (e.g. a windows service app).
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Does it make sense to use “as” instead of a cast even if there is no null check? [closed]
... of a normal cast wrapped with a try-catch block. Moreover, use of as is recommended over a type check followed by a cast. Instead of:
if (x is SomeType)
((SomeType)x).SomeMethod();
which generates an isinst instruction for the is keyword, and a castclass instruction for the cast (effectively ...
Eclipse java debugging: source not found
...d have the JVM use the project instead.
EDIT: Note that as of 2018 it is common to use a build framework like Maven, where the build path is managed by the m2e plugin so this problem should be very less frequent than when the question was asked. If you use Maven and m2e, make sure to enable Prefer...
How can you use an object's property in a double-quoted string?
... string it will be replaced by that variable's value:
$foo = 2
"$foo"
becomes
"2"
If you don't want that you have to use single quotes:
$foo = 2
'$foo'
However, if you want to access properties, or use indexes on variables in a double-quoted string, you have to enclose that subexpression in...
What is the purpose of backbone.js?
...tand the utility of backbone.js from its site http://documentcloud.github.com/backbone , but I still couldn't figure out much.
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How to change progress bar's progress color in Android
...s defined correctly
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@android:id/background">
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#ff9d9e9d"
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how to write setTimeout with params by Coffeescript
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I think it's a useful convention for callbacks to come as the last argument to a function. This is usually the case with the Node.js API, for instance. So with that in mind:
delay = (ms, func) -> setTimeout func, ms
delay 1000, -> something param
Granted, this adds...