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shell init issue when click tab, what's wrong with getcwd?
...ost likely, from another terminal you remove that directory (from within a script or whatever). To get rid of this, in case your current directory was recreated in the meantime, just cd to another (existing) directory and then cd back; the simplest would be: cd; cd -.
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ALTER TABLE without locking the table?
...iggers now. I've used this technique and now I have a functional hot-alter script. With a progress bar. And it works with MyISAM. Life is good.
– Daniel
Jan 21 '09 at 12:10
2
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When to use thread pool in C#? [closed]
...e thread pools for database access, physics/simulation, AI(games), and for scripted tasks ran on virtual machines that process lots of user defined tasks.
Normally a pool consists of 2 threads per processor (so likely 4 nowadays), however you can set up the amount of threads you want, if you know h...
How to check if a given directory exists in Ruby
I am trying to write a script which automatically checks out or updates a Subversion URL based on whether a specified directory exists or not.
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Selecting multiple columns in a pandas dataframe
... is in the
3rd & 4th columns. If you don't know their names when your script runs, you can do this
newdf = df[df.columns[2:4]] # Remember, Python is 0-offset! The "3rd" entry is at slot 2.
As EMS points out in his answer, df.ix slices columns a bit more concisely, but the .columns slicing in...
Javascript: get package.json data in gulpfile.js
...json like you want to read config object you have created in package.json
scripts : {
build: gulp
},
config : {
isClient: false.
}
then you can use
process.env.npm_package_**config_isClient**
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Why specify @charset “UTF-8”; in your CSS file?
...ter set specification on every page containing text is to avoid cross site scripting vulnerabilities. In most cases the UTF-8 character set is the best choice for text, including HTML pages.
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Error in : object of type 'closure' is not subsettable
... defined url in your prior R session, but forgot to copy that code to your script.
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PHP: How to send HTTP response code?
I have a PHP script that needs to make responses with HTTP response codes (status-codes), like HTTP 200 OK, or some 4XX or 5XX code.
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Using R to list all files with a specified extension
I'm very new to R and am working on updating an R script to iterate through a series of .dbf tables created using ArcGIS and produce a series of graphs.
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