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How to check if a variable is an integer in JavaScript?
...eger which is the case... in case of NaN also the type of NaN is different from the type of the return value of pareInt().....
– pranag
Feb 1 '13 at 15:21
1
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How to save an image to localStorage and display it on the next page?
...when the page loads, I use these next three lines to get the Base64 string from localStorage, and apply it to the image with the blank src I created:
var dataImage = localStorage.getItem('imgData');
bannerImg = document.getElementById('tableBanner');
bannerImg.src = "data:image/png;base64," + dataI...
C# Thread safe fast(est) counter
...o (x64).
This "bus lock" statement locks the bus to prevent another CPU from accessing the bus while the calling CPU does its operation. Now, take a look at the C# lock() statement's IL. Here you will see calls to Monitor in order to begin or end a section.
In other words, .Net lock() statemen...
~x + ~y == ~(x + y) is always false?
...sides are not equal, since they have at least that one bit that is flipped from each other.
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@Autowired and static method
I have @Autowired service which has to be used from within a static method. I know this is wrong but I cannot change the current design as it would require a lot of work, so I need some simple hack for that. I can't change randomMethod() to be non-static and I need to use this autowired bean. An...
How do you get the magnitude of a vector in Numpy?
...nner1d. Here's how it compares to other numpy methods:
import numpy as np
from numpy.core.umath_tests import inner1d
V = np.random.random_sample((10**6,3,)) # 1 million vectors
A = np.sqrt(np.einsum('...i,...i', V, V))
B = np.linalg.norm(V,axis=1)
C = np.sqrt((V ** 2).sum(-1))
D = np.sqrt((V*V)...
Convert integer into byte array (Java)
...Array(0xAABBCCDD);
Result is {0xAA, 0xBB, 0xCC, 0xDD}.
Its reverse is fromByteArray() or fromBytes():
int intValue = Ints.fromByteArray(new byte[]{(byte) 0xAA, (byte) 0xBB, (byte) 0xCC, (byte) 0xDD});
int intValue = Ints.fromBytes((byte) 0xAA, (byte) 0xBB, (byte) 0xCC, (byte) 0xDD);
Result i...
What is meant with “const” at end of function declaration? [duplicate]
...se you promise not to modify the instance, doesn't mean that what you read from it won't be modified by someone else holding a non-const reference to it.
– Dmitry Rubanovich
Apr 5 '15 at 21:12
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How to simulate the environment cron executes a script with?
...sudo su
env -i /bin/sh
or
sudo su
env -i /bin/bash --noprofile --norc
From http://matthew.mceachen.us/blog/howto-simulate-the-cron-environment-1018.html
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Split a string by spaces — preserving quoted substrings — in Python
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You want split, from the built-in shlex module.
>>> import shlex
>>> shlex.split('this is "a test"')
['this', 'is', 'a test']
This should do exactly what you want.
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