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Strengths of Shell Scripting compared to Python [closed]
...rite a simple shell loop to do a number of operations using commands like "test" and "expr" and compare the run times with a Python script that uses the "os" module. Commands like test and expr often involve forking a subprocess to do the real work.
– S.Lott
A...
Does “display:none” prevent an image from loading?
...
This answer is only partially correct. I just tested this on Google Chrome (v35) and I can confirm that images with display set to none are not downloaded. This is probably to make responsive design easier on the developer.
– Shawn Whinnery
...
ng-repeat :filter by single field
...FooCtrl', function($scope) {
$scope.products = [
{ id: 1, name: 'test', color: 'red' },
{ id: 2, name: 'bob', color: 'blue' }
/*... etc... */
];
});
<div ng-repeat="product in products | filter: { color: 'red' }">
This can of course be passed in by variable, as ...
How do I specify new lines on Python, when writing on files?
...ch is easier.
Example 1
Input
line1 = "hello how are you"
line2 = "I am testing the new line escape sequence"
line3 = "this seems to work"
You can write the '\n' separately:
file.write(line1)
file.write("\n")
file.write(line2)
file.write("\n")
file.write(line3)
file.write("\n")
Output
hello...
What is the purpose of .PHONY in a Makefile?
... files at both the side of ':' symbol in a rule.
Example
In a directory 'test' following files are present:
prerit@vvdn105:~/test$ ls
hello hello.c makefile
In makefile a rule is defined as follows:
hello:hello.c
cc hello.c -o hello
Now assume that file 'hello' is a text file containin...
Max parallel http connections in a browser?
...note1] | 1000+[^note2] |
[^note1]: tested with 72 requests , 1 domain(127.0.0.1)
[^note2]: tested with 1002 requests, 6 requests per domain * 167 domains (127.0.0.*)
[^note3]: when called in async context, e.g. in callback of setTimeout, + requestAnimationFra...
HTML select form with option to enter custom value
... This feature is only supported by about 50% of the browsers. Only latest firefox, chrome and opera support this; IE, Safari and mobile browsers don't. See http://caniuse.com/
– markmarijnissen
Mar 13 '14 at 10:37
...
IN vs OR in the SQL WHERE Clause
...ied it with Oracle, and it was exactly the same.
CREATE TABLE performance_test AS ( SELECT * FROM dba_objects );
SELECT * FROM performance_test
WHERE object_name IN ('DBMS_STANDARD', 'DBMS_REGISTRY', 'DBMS_LOB' );
Even though the query uses IN, the Execution Plan says that it uses OR:
---------...
Parse large JSON file in Nodejs
...l be extremely memory efficient. It will also be extremely fast. A quick test showed I processed 10,000 rows in under 15ms.
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How do you test running time of VBA code?
...p:
Public Declare Function GetTickCount Lib "kernel32.dll" () As Long
Sub testTimer()
Dim t As Long
t = GetTickCount
For i = 1 To 1000000
a = a + 1
Next
MsgBox GetTickCount - t, , "Milliseconds"
End Sub
after http://www.pcreview.co.uk/forums/grab-time-milliseconds-included-vba-t994765.html (as ...