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How to use filter, map, and reduce in Python 3
...x): return x*x*x
...
>>> list(map(cube, range(1, 11)))
[1, 8, 27, 64, 125, 216, 343, 512, 729, 1000]
>>> import functools
>>> def add(x,y): return x+y
...
>>> functools.reduce(add, range(1, 11))
55
>>>
The recommendation now is that you replace your usa...
“java.lang.OutOfMemoryError : unable to create new native Thread”
...ads created. The default Thread Stack Size for JRockit 1.5/1.6 is 1 MB for 64-bit VM on Linux OS. 32K threads will require a significant amount of physical and virtual memory to honor this requirement.
Try to reduce the Stack Size to 512 KB as a starting point and see if it helps creating more thr...
Passing parameters to addTarget:action:forControlEvents
...
I made a solution based in part by the information above. I just set the titlelabel.text to the string I want to pass, and set the titlelabel.hidden = YES
Like this :
UIButton *imageclick = [[UIButton buttonWithType:UIButtonTypeCustom] retai...
Check image width and height before upload with Javascript
.../Initiate the JavaScript Image object.
var image = new Image();
//Set the Base64 string return from FileReader as source.
image.src = e.target.result;
//Validate the File Height and Width.
image.onload = function () {
var height = this.height;
var width = this.width;
if (height > 100 || w...
Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
...k, with the C# implementation of Android well and truly trouncing the Java-based Dalvik.
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Checking if sys.argv[x] is defined
...h = sys.argv[1]
else:
blah = 'blah'
Some people prefer the exception-based approach you've suggested (eg, try: blah = sys.argv[1]; except IndexError: blah = 'blah'), but I don't like it as much because it doesn't “scale” nearly as nicely (eg, when you want to accept two or three arguments)...
Sending images using Http Post
...sily. One other way would be to encode the byte stream from the image to a base64 encoded string and decode it server side. But this would be too much of a hassle in my opinion and not the way to go.
– Piro
May 30 '10 at 1:16
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How to template If-Else structures in data-bound views?
I constantly find myself using this idiom in KO-based HTML templates:
4 Answers
4
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Most efficient way to reverse a numpy array
... giant chunk of the running time. What I have right now is the common view-based method:
7 Answers
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Concept behind these four lines of tricky C code
...The number 7709179928849219.0 has the following binary representation as a 64-bit double:
01000011 00111011 01100011 01110101 01010011 00101011 00101011 01000011
+^^^^^^^ ^^^^---- -------- -------- -------- -------- -------- --------
+ shows the position of the sign; ^ of the exponent, and - of t...