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Most efficient way to reverse a numpy array
...onstructing a 1d array, transforming it into a 2d array, flipping it, then converting back into a 1d array. time.clock() will be used to keep time, which is presented in terms of seconds.
import time
import numpy as np
start = time.clock()
x = np.array(range(3))
#transform to 2d
x = np.atleast_2d(...
UnicodeDecodeError when reading CSV file in Pandas with Python
...e to use Latin1 encoding because it accept any possible byte as input (and convert it to the unicode character of same code):
pd.read_csv(input_file_and_path, ..., encoding='latin1')
You know that most of the file is written with a specific encoding, but it also contains encoding errors. A real wo...
How to get an MD5 checksum in PowerShell
...r
$utf8 = New-Object -TypeName System.Text.UTF8Encoding
$hash = [System.BitConverter]::ToString($md5.ComputeHash($utf8.GetBytes($someString)))
If the content is a file:
$someFilePath = "C:\foo.txt"
$md5 = New-Object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider
$hash = [System.B...
Using a dictionary to count the items in a list [duplicate]
I'm new to Python and I have a simple question, say I have a list of items:
8 Answers
...
Printing without newline (print 'a',) prints a space, how to remove?
...want to print integers, floats, or other non-string values, you'll have to convert them to a string with the str() function.
printf(str(2) + " " + str(4))
The output will be: 2 4
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How to remove the last character from a string?
...
@Marko lol yes since it's the standard, feels odd when people make their own stuff up.
– SSpoke
Jun 26 '14 at 19:15
28
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What is the benefit of using “SET XACT_ABORT ON” in a stored procedure?
...
SET XACT_ABORT ON instructs SQL Server to rollback the entire transaction and abort the batch when a run-time error occurs. It covers you in cases like a command timeout occurring on the client application rather than within SQL Server itself (which isn't covered by the default XACT_ABORT OFF setti...
How to find the sum of an array of numbers
...resentation of JavaScript code. Using the Array.prototype.join function to convert the array to a string, we change [1,2,3] into "1+2+3", which evaluates to 6.
console.log(
eval([1,2,3].join('+'))
)
//This way is dangerous if the array is built
// from user input as it may be exploited ...
How to reset AUTO_INCREMENT in MySQL?
...ue is less than the current maximum value in the
column, no error occurs and the current sequence value is not changed.
See How to Reset an MySQL AutoIncrement using a MAX value from another table? on how to dynamically get an acceptable value.
...
What is the difference between bindParam and bindValue?
What is the difference between PDOStatement::bindParam() and PDOStatement::bindValue() ?
7 Answers
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