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Copy table without copying data
...ncy. I've just been burned using this at scale, where we created about 50 different tables based off the same source table, at the same time as inserting into the source table from other processes. Basically caused a massive lock meltdown and had to restart MySQL.
– Mark B
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Remove new lines from string and replace with one empty space
... think you need to repeat \s. I think you can simply write '/\s+/'.
Also, if you want to remove whitespace first and last in the string, add trim.
With these modifications, the code would be:
$string = preg_replace('/\s+/', ' ', trim($string));
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uppercase first character in a variable with bash
...n) and it uses two substitutions compared to the best scored answer's one. If you absolutely must write legacy code, consider using a function instead of a subshell.
– Steve
Apr 13 '16 at 23:57
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Grep for literal strings
... (except a single quote) untouched by enclosing them inside single quotes. If you need to type a single quote do it like this 'I'\''m special'
– ndemou
Dec 2 '17 at 10:51
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TypeScript: Creating an empty typed container array
...Array constructor
var arr = new Array<Criminal>();
Explicitly specifying the type is the general solution for whenever type inference fails for a variable declaration.
The advantage of using a type assertion (sometimes called a cast, but it's not really a cast in TypeScript) works for any e...
Convert an integer to a float number
...is no float type. Looks like you want float64. You could also use float32 if you only need a single-precision floating point value.
package main
import "fmt"
func main() {
i := 5
f := float64(i)
fmt.Printf("f is %f\n", f)
}
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Why is textarea filled with mysterious white spaces?
...idth:350px; height:80px;" cols="42" rows="5" name="sitelink"><?php
if($siteLink_val) echo $siteLink_val;
?></textarea>
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How to sort a file, based on its numerical values for a field?
...k and forth several times and I didnt see that option. Ah, I was at a simplified man page. Damn!
– lukmac
Jan 31 '11 at 21:31
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How do I speed up the scroll speed in a JScrollPane when using the mouse wheel?
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Beautiful. I also noticed this affects the up and down arrows in the scroll bar, which is also very desired.
– Erick Robertson
Apr 7 '11 at 15:44
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Chmod recursively
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You need read access, in addition to execute access, to list a directory. If you only have execute access, then you can find out the names of entries in the directory, but no other information (not even types, so you don't know which of the entries are subdirectories). This works for me:
find . -t...