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How to get the contents of a webpage in a shell variable?
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You can use curl or wget to retrieve the raw data, or you can use w3m -dump to have a nice text representation of a web page.
$ foo=$(w3m -dump http://www.example.com/); echo $foo
You have reached this web page by typing "example.com", "example.net","example.org" o...
How do I get only directories using Get-ChildItem?
...e items.
Get-ChildItem -Recurse | ?{ $_.PSIsContainer }
If you want the raw string names of the directories, you can do
Get-ChildItem -Recurse | ?{ $_.PSIsContainer } | Select-Object FullName
For PowerShell 3.0 and greater:
dir -Directory
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Display a float with two decimal places in Python
...marks as usual, prepended with f'... in the same way you would r'... for a raw string. Then you place whatever you want to put within your string, variables, numbers, inside braces f'some string text with a {variable} or {number} within that text' - and Python evaluates as with previous string forma...
How do I escape ampersands in XML so they are rendered as entities in HTML?
... It might be a guess; it is correct though. CDATA markers allow raw ampersands to be used.
– Quentin
Aug 25 '09 at 14:40
19
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Does pandas iterrows have performance issues?
...se groupby to avoid repeated comparing of values.
Use to_records to access raw numpy.records objects.
Don't operate on DataFrame until you have compiled all the data.
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Strange out of memory issue while loading an image to a Bitmap object
... BitmapFactory.Options options, int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int halfHeight ...
Windows threading: _beginthread vs _beginthreadex vs CreateThread C++
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CreateThread() is a raw Win32 API call for creating another thread of control at the kernel level.
_beginthread() & _beginthreadex() are C runtime library calls that call CreateThread() behind the scenes. Once CreateThread() has returned, ...
How to use the 'sweep' function
...f_T=sweep(sweep(df,2,df_means,"-"),2,df_sds,"/")*10+50
This code convert raw scores to T scores (with mean=50 and sd=10):
> df
[,1] [,2] [,3] [,4] [,5]
[1,] 109 8 89 69 15
[2,] 85 13 25 150 26
[3,] 30 79 48 1 125
[4,] 56 74 23 140 100
[5,] 136 110 1...
Postgres DB Size Command
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Based on the answer here by @Hendy Irawan
Show database sizes:
\l+
e.g.
=> \l+
berbatik_prd_commerce | berbatik_prd | UTF8 | en_US.UTF-8 | en_US.UTF-8 | | 19 MB | pg_default |
berbatik_stg_commerce | berbatik_stg ...
Can I escape html special chars in javascript?
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@jamix You can not do a global replacement with raw strings, while modern browser engines optimize simple regular expression pretty good.
– bjornd
May 30 '14 at 15:43
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