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How to solve Operator '!=' cannot be applied to operands of type 'T' and 'T' [duplicate]
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user541686user541686
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What is the difference between join and merge in Pandas?
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answered Jun 12 '16 at 10:34
Romain JouinRomain Jouin
2,9923131 silver badges5959 bronze badges
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Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
... a special case of foldLeft
scala> val intParList: ParSeq[Int] = (1 to 100000).map(_ => scala.util.Random.nextInt()).par
scala> timeMany(1000, intParList.reduce(_ + _))
Took 462.395867 milli seconds
scala> timeMany(1000, intParList.foldLeft(0)(_ + _))
Took 2589.363031 milli seconds
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How do you sign a Certificate Signing Request with your Certification Authority?
..._default # The default ca section
[ CA_default ]
default_days = 1000 # How long to certify for
default_crl_days = 30 # How long before next CRL
default_md = sha256 # Use public key default MD
preserve = no # Keep passed DN ordering
x509_ext...
Use find command but exclude files in two directories
...owLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\...
How to add an extra column to a NumPy array
...olution and faster to boot is to do the following:
import numpy as np
N = 10
a = np.random.rand(N,N)
b = np.zeros((N,N+1))
b[:,:-1] = a
And timings:
In [23]: N = 10
In [24]: a = np.random.rand(N,N)
In [25]: %timeit b = np.hstack((a,np.zeros((a.shape[0],1))))
10000 loops, best of 3: 19.6 us per...
Are lists thread-safe?
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10
lemiant, deque is thread-safe. From Chapter 2 of Fluent Python: "The class collections.deque is a thread-safe double-ended queue designed f...
How to write a Python module/package?
...e to be in the same directory to use it
– Math Coder 101
May 28 at 21:35
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MD5 algorithm in Objective-C
...[4], result[5], result[6], result[7],
result[8], result[9], result[10], result[11],
result[12], result[13], result[14], result[15]
];
}
@end
@implementation NSData (MyAdditions)
- (NSString*)md5
{
unsigned char result[CC_MD5_DIGEST_LENGTH];
CC_MD5( self.bytes, (int...
Forward an invocation of a variadic function in C
... Uli Köhler
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answered Sep 29 '08 at 20:56
Adam RosenfieldAdam Rosenfield
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