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How to import multiple .csv files at once?
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edited Aug 3 '18 at 19:32
joran
152k2525 gold badges379379 silver badges431431 bronze badges
answered...
How to pretty print XML from Java?
...?xml ...> declaration, add transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes")
– rustyx
Aug 25 '15 at 20:01
4
...
image processing to improve tesseract OCR accuracy
... the kernel size depending on your data set):
kernel = np.ones((1, 1), np.uint8)
img = cv2.dilate(img, kernel, iterations=1)
img = cv2.erode(img, kernel, iterations=1)
Applying blur, which can be done by using one of the following lines (each of which has its pros and cons, however, median blur an...
Liquibase lock - reasons?
...r b'0'
– OrangePot
Oct 10 '17 at 20:32
2
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What tools are there for functional programming in C?
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answered Oct 19 '08 at 18:32
ephemientephemient
173k3232 gold badges249249 silver badges372372 bronze badges
...
Defining an array of anonymous objects in CoffeeScript
...underscore, variable used to omit not used variables:
a =
items: [
_ =
name: 'value1'
_ =
name: 'value2'
]
console.log JSON.stringify(a) will produce this:
{
"items":[
{
"name":"value1"
},{
"name":"value2"
}
]
}
...
Create a temporary table in a SELECT statement without a separate CREATE TABLE
...x to your temporary table do:
CREATE TEMPORARY TABLE IF NOT EXISTS
temp_table ( INDEX(col_2) )
ENGINE=MyISAM
AS (
SELECT col_1, coll_2, coll_3
FROM mytable
)
It also works with PRIMARY KEY
share
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Cartesian product of x and y array points into single array of 2D points
...ev. of 7 runs, 10000 loops each)
cartesian_product_transpose:
67.7 µs ± 932 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
cartesian_product_recursive:
215 µs ± 6.01 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)
cartesian_product_itertools:
3.65 ms ± 38.7 µs per loop...
Should a return statement be inside or outside a lock?
...nd look at the IL (release mode etc):
.method private hidebysig static int32 ReturnInside() cil managed
{
.maxstack 2
.locals init (
[0] int32 CS$1$0000,
[1] object CS$2$0001)
L_0000: ldsfld object Program::sync
L_0005: dup
L_0006: stloc.1
L_0007: call void...
How do I capture SIGINT in Python?
...ignal like this:
#!/usr/bin/env python
import signal
import sys
def signal_handler(sig, frame):
print('You pressed Ctrl+C!')
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
print('Press Ctrl+C')
signal.pause()
Code adapted from here.
More documentation on signal can be found here....