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Writing files in Node.js
...ilename or file descriptor
data <string> | <Buffer> | <Uint8Array>
options <Object> | <string>
callback <Function>
Worth reading the offical File System (fs) docs.
Update: async/await
fs = require('fs');
util = require('util');
writeFile = util.promisify(fs.write...
How can I round down a number in Javascript?
...pidermonkey 1.7, and ran a loop to sum up the floor'ed value of x[i] on an array of 100000 floating point numbers, first with Math.floor(), then with bitwise or as you suggest. It took approx the same time, 125 msec.
– Jason S
Sep 18 '09 at 14:49
...
How to auto-reload files in Node.js?
...ly for one file (server.js), but can be adapted to multiple files using an array of files, a for loop to get all file names, or by watching a directory:
fs.watch('./', function (event, filename) { // sub directory changes are not seen
console.log(`restart server`);
server.kill();
server...
How to properly override clone method?
...o it. (Either Josh Bloch or Neal Gafter)
Here is an extract from openJDK, ArrayList class:
public Object clone() {
try {
ArrayList<?> v = (ArrayList<?>) super.clone();
v.elementData = Arrays.copyOf(elementData, size);
v.modCount = 0;
return v;
} ...
Check if a string has white space
...n hasWhiteSpace(s) {
const whitespaceChars = [' ', '\t', '\n'];
return Array.from(s).some(char => whitespaceChars.includes(char));
}
const withSpace = "Hello World!";
const noSpace = "HelloWorld!";
console.log(hasWhiteSpace(withSpace));
console.log(hasWhiteSpace(noSpace));
console.log(hasW...
How to find out what character key is pressed?
... Mousetrap.record(function(sequence) {
// sequence is an array like ['ctrl+k', 'c']
alert('You pressed: ' + sequence.join(' '));
});
}
</script>
<button onclick="recordSequence()">Record</button>
...
How to replace all strings to numbers contained in each string in Notepad++?
...ve Notepad++ v6.8.8
Find: [([a-zA-Z])]
Replace: [\'\1\']
Will produce:
$array[XYZ] => $array['XYZ']
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Is Unit Testing worth the effort? [closed]
...back afterwards. No mocking needed. Sometimes I have one class to pull an array of data, I then pass that array of data to a second class that does "things" to the data. This second class does not touch the database. In this case I group my tests, the ones that test the first class & touch the ...
How can I iterate through the unicode codepoints of a Java String?
...orEach(c -> ...);
or with a for loop by collecting the stream into an array:
for(int c : string.codePoints().toArray()){
...
}
These ways are probably more expensive than Jonathan Feinbergs's solution, but they are faster to read/write and the performance difference will usually be insig...
How to convert all tables from MyISAM into InnoDB?
...E = 'MyISAM'";
$rs = mysql_query($sql);
while($row = mysql_fetch_array($rs))
{
$tbl = $row[0];
$sql = "ALTER TABLE `$tbl` ENGINE=INNODB";
mysql_query($sql);
}
?>
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