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How to determine whether an object has a given property in JavaScript
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600
Object has property:
If you are testing for properties that are on the object itself (not a p...
Javascript - Open a given URL in a new tab by clicking a button
...s follows:
onclick="window.open(this.href,'popUpWindow','height=400,width=600,left=10,top=10,,scrollbars=yes,menubar=no'); return false;"
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foll...
Convert boolean to int in Java
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600
int myInt = myBoolean ? 1 : 0;
^^
PS : true = 1 and false = 0
...
Stripping out non-numeric characters in string
... a string constructed from 100,000 GUIDs joined together (resulting in a 3,600,000 character string). Regex was consistently around half a second, whereas LINQ consistently was in the 1/10 of a second range. Basically LINQ was 5 or more times faster on average.
– Chris Pratt
...
jQuery using append with effects
...ansition (shows up immediately). use string 'fast' for 200ms or 'slow' for 600ms. or type any number like $("element").show(747) (= 747ms) to define own speed. see the docs and look for animation / duration.
– honk31
Jul 9 '14 at 8:59
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Changing column names of a data frame
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Use the colnames() function:
R> X <- data.frame(bad=1:3, worse=rnorm(3))
R> X
bad ...
Is it possible to run selenium (Firefox) web driver without a GUI?
...m pyvirtualdisplay import Display
display = Display(visible=0, size=[800, 600])
display.start()
#do selenium job here
display.close()
A shorter version is:
with Display() as display:
# selenium job here
This is generally a python encapsulate of xvfb, and more convinient somehow.
By the ...
How to see the changes in a Git commit?
...mit,
Method 1:
git diff commit_id^! #commit id something like this 1c6a6000asad012
Method 2:
git show commit_id
For example: git show 1c6a600a
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How to create a video from images with FFmpeg?
...NG 207x238 207x238+0+0 8-bit sRGB 76.8KB 0.000u 0:00.000
png/5.png PNG 450x600 450x600+0+0 8-bit sRGB 627KB 0.000u 0:00.000
so the classic 480p (640x480 == 4/3) aspect ratio seems appropriate.
Do one conversion with minimal resizing to make widths even (TODO
automate for any width, here I just m...
Finding sum of elements in Swift array
...ry = salary
}
}
let employees = [Employee(100),Employee(300),Employee(600)]
var sumSalary = employees.reduce(0, {$0 + $1.salary}) //1000
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