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source of historical stock data [closed]
...h Time)
l1 Last Trade (Price Only)
l2 High Limit
l3 Low Limit
m Day's Range
m2 Day's Range (Real-time)
m3 50-day Moving Average
m4 200-day Moving Average
m5 Change From 200-day Moving Average
m6 Percent Change From 200-day Moving Average
m7 Change From 50-day Moving Average
m8 Percent Ch...
initialize a numpy array
...ollows :
import numpy as np
big_array = [] # empty regular list
for i in range(5):
arr = i*np.ones((2,4)) # for instance
big_array.append(arr)
big_np_array = np.array(big_array) # transformed to a numpy array
of course your final object takes twice the space in the memory at the creatio...
Possible reasons for timeout when trying to access EC2 instance
... active security
group. In the inbound dialog below, enter 22 in the port range, your local IP/32 in the source field, and leave 'custom tcp rule' in the dropdown.
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...
What are the use(s) for tags in Go?
...er{"Bob", "bob@mycompany.com"}
t := reflect.TypeOf(u)
for _, fieldName := range []string{"Name", "Email"} {
field, found := t.FieldByName(fieldName)
if !found {
continue
}
fmt.Printf("\nField: User.%s\n", fieldName)
fmt.Printf("\tWhole tag value : %q\n", field.Tag)
f...
Best ways to teach a beginner to program? [closed]
...ERATION TO SIMPLIFY SQUARE CODE
>>> clear()
>>> for i in range(4):
forward(50)
right(90)
>>>
>>> #INTRODUCE PROCEDURES
>>> def square(length):
down()
for i in range(4):
forward(length)
right(90)
&...
How to drop a list of rows from Pandas dataframe?
... you want to replace (and also using your 0 to n example):df.drop(df.index[range(0, n)], axis=0, inplace=True)
– mrbTT
Aug 2 '18 at 20:02
...
Grab a segment of an array in Java without creating a new array on heap
...
That said, if one is looking for brevity, the utility method Arrays.copyOfRange() was introduced in Java 6 (late 2006?):
byte [] a = new byte [] {0, 1, 2, 3, 4, 5, 6, 7};
// get a[4], a[5]
byte [] subArray = Arrays.copyOfRange(a, 4, 6);
...
JavaScript get clipboard data on paste event (Cross browser)
...wsers, as is pasting the content into the editor. You need to obtain a TextRange in IE and a Range in other browsers.
– Tim Down
Feb 1 '10 at 14:19
...
Best GWT widget library? [closed]
...f which have accompanying code
Good selection of widgets that cover a wide range of functionality
Cons:
Makes assumptions about your data's format and structure that you may not be able to accommodate
Library is just a JSNI wrapper, which makes it harder to debug and extend
Future support and de...
Best way to repeat a character in C#
...tic string Repeat(this string s, int n)
{
return new String(Enumerable.Range(0, n).SelectMany(x => s).ToArray());
}
public static string Repeat(this char c, int n)
{
return new String(c, n);
}
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