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Reading a huge .csv file
...f_list.append(df_chunk)
# Merge all dataframes into one dataframe
X = pd.concat(df_list)
# Delete the dataframe list to release memory
del df_list
del df_chunk
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How to bind function arguments without binding this?
...is,
partial = function() {
return fn.apply(this, args.concat(slice.call(arguments)));
// ^^^^
};
partial.prototype = Object.create(this.prototype);
return partial;
};
...
How do you convert a byte array to a hexadecimal string, and vice versa?
...1.1X faster)
Sentence: 17.95 (2.2X faster)
Array.ConvertAll (using string.Concat, requires .NET 4.0) (via Will Dean)
Text: 752,078.70 (1.0X faster)
Sentence: 18.28 (2.2X faster)
{StringBuilder}.AppendFormat (using foreach) (via Tomalak)
Text: 672,115.77 (1.1X faster)
Sentence: 36.82 (1.1X fast...
mysql update column with value from another table
...
yep, INNER JOIN is perfect in this situation. I also used CONCAT_WS to merge pruduct name and SKU from another table
– vladkras
Jul 16 '14 at 5:43
2
...
How to remove illegal characters from path and filenames?
...s":
public string RemoveInvalidChars(string filename)
{
return string.Concat(filename.Split(Path.GetInvalidFileNameChars()));
}
You may instead want to replace them:
public string ReplaceInvalidChars(string filename)
{
return string.Join("_", filename.Split(Path.GetInvalidFileNameChars()...
How to see full query from SHOW PROCESSLIST
...; the capacity to end a query on Amazon Aurora MySQL: select id pid, user, concat('CALL mysql.rds_kill(', id, ');'), time, state, info from information_schema.processlist where info is not null order by time desc;
– spen.smith
Sep 9 at 23:35
...
How to do a regular expression replace in MySQL?
...= SUBSTRING(original,i,1);
IF NOT ch REGEXP pattern THEN
SET temp = CONCAT(temp,ch);
ELSE
SET temp = CONCAT(temp,replacement);
END IF;
SET i=i+1;
END LOOP;
ELSE
SET temp = original;
END IF;
RETURN temp;
END$$
DELIMITER ;
Example execution:
mysql> select regex_replac...
The function to show current file's full path in mini buffer
...delete-region (point) (save-excursion (end-of-line) (point)))
(insert (concat file-true-dir file-name))))
And then if I want it in the clipboard, I just kill the line (C-a C-k). But we could easily copy the truename to the clipboard in the above command, just change the last line to be:
(ins...
Phase • Animations made easy! - Extensions - Kodular Community
...age");
if (splashImage) {
splashImage.src = "data:image/svg+xml;base64,".concat(encodedSvg);
const connectStart = performance.timing.connectStart || 0;
const targetTime = connectStart + DELAY_TARGET;
let splashInterval;
let discourseReady;
const swapSplash = () => {
splashWrapper && ...
How to filter multiple values (OR operation) in angularJS
...)){
fObj[key] = obj;
fData = fData.concat($filter('filter')(this.filteredData,fObj));
} else if (angular.isArray(obj)){
if (obj.length > 0){
for (var i=0;i<obj.length;i++){
...