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What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
...terned. The
distinct values are stored in a string
intern pool.
Basically, a string intern pool allows a runtime to save memory by preserving immutable strings in a pool so that areas of the application can reuse instances of common strings instead of creating multiple instances of it.
As an ...
Get original URL referer with PHP?
I am using $_SERVER['HTTP_REFERER']; to get the referer Url. It works as expected until the user clicks another page and the referer changes to the last page.
...
Proper way to use AJAX Post in jquery to pass model from strongly typed MVC3 view
... Nothing glaring stands out as a security issue to me. If you're really concerned about it though, you can always make a custom model binder on the mvc side.
– Craig M
May 12 '11 at 18:31
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How to load a xib file in a UIView
...
To get an object from a xib file programatically you can use: [[NSBundle mainBundle] loadNibNamed:@"MyXibName" owner:self options:nil] which returns an array of the top level objects in the xib.
So, you could do something like this:
UIView *rootView = [[[NSBundle mai...
Run Command Prompt Commands
...
this is all you have to do run shell commands from C#
string strCmdText;
strCmdText= "/C copy /b Image1.jpg + Archive.rar Image2.jpg";
System.Diagnostics.Process.Start("CMD.exe",strCmdText);
EDIT:
This is to hide the cmd window.
...
Why doesn't nodelist have forEach?
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NodeList now has forEach() in all major browsers
See nodeList forEach() on MDN.
Original answer
None of these answers explain why NodeList doesn't inherit from Array, thus allowing it to have forEach and all the rest.
The answer is found on this es-discus...
How to measure time taken between lines of code in python?
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If you want to measure CPU time, can use time.process_time() for Python 3.3 and above:
import time
start = time.process_time()
# your code here
print(time.process_time() - start)
First call turns the timer on, and second call tells you how many seconds have elapsed.
The...
How to perform file system scanning
... will not work for release versions of GO in the near future.
There's actually a function in the standard lib just for this: filepath.Walk.
package main
import (
"path/filepath"
"os"
"flag"
)
type visitor int
// THIS CODE NO LONGER WORKS, PLEASE SEE ABOVE
func (v visitor) VisitDir(p...
Compare two DataFrames and output their differences side-by-side
...original question
The first step is to concatenate the DataFrames horizontally with the concat function and distinguish each frame with the keys parameter:
df_all = pd.concat([df.set_index('id'), df2.set_index('id')],
axis='columns', keys=['First', 'Second'])
df_all
It's pr...
How do I create a variable number of variables?
... answered Sep 3 '09 at 12:41
c_harmc_harm
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