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How to write file if parent folder doesn't exist?
...h.isAbsolute(targetDir) ? sep : '';
const baseDir = isRelativeToScript ? __dirname : '.';
return targetDir.split(sep).reduce((parentDir, childDir) => {
const curDir = path.resolve(baseDir, parentDir, childDir);
try {
fs.mkdirSync(curDir);
} catch (err) {
if (err.code ...
Why can templates only be implemented in the header file?
...of C++ templates is to avoid having to write nearly identical class MyClass_int, class MyClass_float, etc, but to still be able to end up with compiled code that is mostly as if we had written each version separately. So a template is literally a template; a class template is not a class, it's a rec...
Creating a daemon in Linux
...#include <sys/stat.h>
#include <syslog.h>
static void skeleton_daemon()
{
pid_t pid;
/* Fork off the parent process */
pid = fork();
/* An error occurred */
if (pid < 0)
exit(EXIT_FAILURE);
/* Success: Let the parent terminate */
if (pid > 0)...
Bogus foreign key constraint fail
...neccessary to write all the drop statements in one query, eg.
SET FOREIGN_KEY_CHECKS=0;
DROP TABLE my_first_table_to_drop;
DROP TABLE my_second_table_to_drop;
SET FOREIGN_KEY_CHECKS=1;
Where the SET FOREIGN_KEY_CHECKS=1 serves as an extra security measure...
...
Resize UIImage by keeping Aspect ratio and width
...
+(UIImage*)imageWithImage: (UIImage*) sourceImage scaledToWidth: (float) i_width
{
float oldWidth = sourceImage.size.width;
float scaleFactor = i_width / oldWidth;
float newHeight = sourceImage.size.height * scaleFactor;
float newWidth = oldWidth * scaleFactor;
UIGraphicsBegin...
Filter rows which contain a certain string
...
note that this does not work when the object is a tbl_sql as grepl does not translate to sql.
– David LeBauer
Aug 11 '15 at 17:17
...
When and why to 'return false' in JavaScript?
...s no "in FileNotFound", it's a TDWTF in-joke: thedailywtf.com/Articles/What_Is_Truth_0x3f_.aspx
– Chris Jester-Young
May 13 '09 at 2:40
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PHP function to get the subdomain of a URL
...
Here's a one line solution:
array_shift((explode('.', $_SERVER['HTTP_HOST'])));
Or using your example:
array_shift((explode('.', 'en.example.com')));
EDIT: Fixed "only variables should be passed by reference" by adding double parenthesis.
EDIT 2: Star...
Select columns from result set of stored procedure
...ame as temp tables? Or is it strictly in memory?
– d-_-b
Mar 4 '12 at 23:37
This was interesting: sqlnerd.blogspot.com...
How to find third or nth maximum salary from salary table?
...
Use ROW_NUMBER(if you want a single) or DENSE_RANK(for all related rows):
WITH CTE AS
(
SELECT EmpID, EmpName, EmpSalary,
RN = ROW_NUMBER() OVER (ORDER BY EmpSalary DESC)
FROM dbo.Salary
)
SELECT EmpID, EmpName, ...