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How to make input type= file Should accept only pdf and xls
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Please, never ever check a file based on the extension. What about a executable named lolcat.jpg?
– feeela
Aug 27 '12 at 13:14
1
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Draw a perfect circle from user's touch
...shape:
So it is not that hard to implement a circle detection mechanism based on that idea. See working demo below (Sorry, I'm using Java as the fastest way to provide this fast and a bit dirty example):
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.a...
Crash logs generated by iPhone Simulator?
.../MyApp
set print asm-demangle on
set print symbol-filename on
p/a 0×00015c64 -> address got by opening the crash log in “Console” app or just double clicking the the .crash file.
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im...
Compiling simple Hello World program on OS X via command line
... ld: can't link with a main executable file './a.out' for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)
– Eddified
Jan 31 '14 at 6:32
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dropping infinite values from dataframes in pandas?
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Use (fast and simple):
df = df[np.isfinite(df).all(1)]
This answer is based on DougR's answer in an other question.
Here an example code:
import pandas as pd
import numpy as np
df=pd.DataFrame([1,2,3,np.nan,4,np.inf,5,-np.inf,6])
print('Input:\n',df,sep='')
df = df[np.isfinite(df).all(1)]
prin...
Smart way to truncate long strings
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64
Note that this only needs to be done for Firefox.
All other browsers support a CSS solution (s...
Download File to server from URL
... How to download from this url: filehippo.com/download_mozilla-firefox-64/post_download
– Saurin Dashadia
Jul 10 at 13:38
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Is it possible to make a Tree View with Angular?
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I have created a simple re-usable tree control (directive) for AngularJS based on a Bootstrap "nav" list. I added extra indentation, icons, and animation. HTML attributes are used for configuration.
It does not use recursion.
I called it angular-bootstrap-nav-tree ( catchy name, don't you thin...
How can building a heap be O(n) time complexity?
...can prove (using some ideas from information theory) that for a comparison-based sort, O(n log n) is the best you could hope for anyway, so there's no reason to be disappointed by this or expect heap sort to achieve the O(n) time bound that buildHeap does.
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Detect application heap size in Android
... to 32:
maxMemory: 33554432
getMemoryClass: 32
With VM Heap Size set to 64:
maxMemory: 67108864
getMemoryClass: 32
In addition to the above, I tested on a Novo7 Paladin tablet running Ice Cream Sandwich.
This was essentially a stock version of ICS, except that I've rooted the tablet through...