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How to use phpexcel to read data and insert into database?
... = 1; $row <= $highestRow; $row++){
// Read a row of data into an array
$rowData = $sheet->rangeToArray('A' . $row . ':' . $highestColumn . $row,
NULL,
TRUE,
FALSE);
// In...
How can I convert an RGB image into grayscale in Python?
...o use scikit-image, which provides some functions to convert an image in ndarray, like rgb2gray.
from skimage import color
from skimage import io
img = color.rgb2gray(io.imread('image.png'))
Notes: The weights used in this conversion are calibrated for contemporary CRT phosphors: Y = 0.2125 R +...
Is there a splice method for strings?
The Javascript splice only works with arrays. Is there similar method for strings? Or should I create my own custom function?
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What is “:-!!” in C code?
... don't think that struct with size 0 are allowed. E.g if you'd create an array of that type, the individual array elements still must have different addresses, no?
– Jens Gustedt
Feb 10 '12 at 15:09
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Finding all possible combinations of numbers to reach a given sum
...is the Java version of the same algorithm:
package tmp;
import java.util.ArrayList;
import java.util.Arrays;
class SumSet {
static void sum_up_recursive(ArrayList<Integer> numbers, int target, ArrayList<Integer> partial) {
int s = 0;
for (int x: partial) s += x;
...
in javascript, how can i get the last character in a string [duplicate]
...
Since in Javascript a string is a char array, you can access the last character by the length of the string.
var lastChar = myString[myString.length -1];
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In where shall I use isset() and !empty()
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empty() also returns true for an empty array.
– Mitya
Mar 12 '19 at 12:22
Even tho...
Options for initializing a string array [duplicate]
...tring>();
//... read this in from somewhere
string[] myString = list.ToArray();
From StringCollection
StringCollection sc = new StringCollection();
/// read in from file or something
string[] myString = sc.ToArray();
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How to delete an array element based on key? [duplicate]
...
PHP
unset($array[1]);
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Save byte array to file [duplicate]
I have a byte array (an IEnumerable actually), and I need to save it to a new file containing this data.
2 Answers
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