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PHP PDO returning single row
...ence. If something goes wrong with query, depending on how you've got your error handling set up, it will either throw an Exception (desired, in my opinion) or you'll get an Invalid object method reference "fetch" on "false".... error, a form of which you would have gotten anyway because the query o...
Add unique constraint to combination of two columns
...tions are expensive).
http://www.sqlperformance.com/2012/08/t-sql-queries/error-handling
http://www.mssqltips.com/sqlservertip/2632/checking-for-potential-constraint-violations-before-entering-sql-server-try-and-catch-logic/
If you want to prevent exceptions from bubbling up to the application, w...
What's the fastest way to loop through an array in JavaScript?
...e better performance, writing code that is less legible and more prone to errors than a simple straightforward for loop. Therefore, I recommend:
If your app iterates over a lot of items or your loop code is inside a function that is used often, a straightforward for loop is the answer:
for (var ...
Why is access to the path denied?
...eadonly (since you do actually have access to the path!) In my opinion the error message should be changed. Thanks for the hint anyways!
– MBoros
Feb 19 '14 at 13:57
1
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How can you undo the last git add?
...
Generates (for me) the error: fatal: Failed to resolve 'HEAD' as a valid ref. I haven't committed anything yet (new repo) just done git add . and regretted it. I don't want to reset the entire add, just one directory. git reset -- dir/*.* generates...
Default value of function parameter
....cpp will not see the default parameter declaration, and will fail with an error.
For this reason, the default parameter definition is usually specified in the function declaration:
lib.h
int Add(int a, int b = 3);
share...
How to delete an object by id with entity framework
...ur entity in the context because if you don't do that, you will receive an error while removing. EF can remove entities in this context only
– Pierre-Luc
Jan 9 '19 at 14:43
...
Colorize logs in eclipse console
... to colorize parts of logs in the eclipse console. I know I could send to error and standard streams and color them differently but I'm more looking someting in the lines of ANSI escape codes (or anyother, HTML ?) where I could embed the colors in the string to have it colored in the logs.
...
Swift double to string
...e 6, I had no problems casting a double to a string but now it gives me an error
14 Answers
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Javascript calculate the day of the year (1 - 366)
... need to remove the -- from --m.
Note this assumes a valid date (although error-checking is just some characters more).
function dayNo(y,m,d){
return --m*31-(m>1?(1054267675>>m*3-6&7)-(y&3||!(y%25)&&y&15?0:1):0)+d;
}
<!-- some examples for the snippet -->...