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How to design a database for User Defined Fields?
...ant of #2). This answer is specifically tailored to this situation and the description of the data distribution and access patterns described.
Pros:
Because you indicate that some UDFs
have values for a small portion of
the overall data set, a separate
table would give you the best
performance be...
What is the difference between `throw new Error` and `throw someObject`?
...lly, the name of the constructor function the error belongs to.
message: A description of the error, with this description varying depending on the browser.
Six possible values can be returned by the name property, which as mentioned correspond to the names of the error's constructors. They are:
...
Do zombies exist … in .NET?
... classes).
†first time I've heard of the term zombies but based on your description, your colleague probably meant a thread that terminated without release all resources. This could potentially cause a deadlock, memory leak or some other bad side effect. This is obviously not desirable but singli...
When to throw an exception?
... is a King of France. Presupposition failure is often seen with definite descriptions, and that's common when programming. E.g. "The head of a list" has a presupposition failure when a list is empty, and then it's appropriate to throw an exception.
– Mohan
Se...
MySQL combine two columns into one column
...L() function in some implementations. In my situation, I have a column of descriptions which is NOT NULL, and a column of serial numbers which may be NULL This is how I combined them into one column:
SELECT CONCAT(description,IFNULL(' SN: ', serial_number),'')) FROM my_table;
My results suggest ...
Difference between API and ABI
... ABI, but main.c would still break!
This is because we changed the "human description" of what the function is supposed to do rather than a programmatically noticeable aspect.
I just had the philosophical insight that formal verification of software in a sense moves more of the "semantic API" into...
Python TypeError: not enough arguments for format string
...3}', '{4}', '{5}', '{6}'".format(softname, procversion, int(percent), exe, description, company, procurl)
This also fixes the error that you happened to have.
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What is the difference between indexOf() and search()?
...
The search function (one description here) takes a regular expression, which allows you to match against more sophisticated patters, case-insensitive strings, etc., while indexOf (one description here) simply matches a literal string. However, indexO...
Check if a string is html or not
...components" and technologies like JSX, which mix HTML and richer component descriptions, typically generating shadow DOM. Slap this in a file and eval document.querySelector('strange') — it'll work.
– amcgregor
Feb 27 at 16:46
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Why use JUnit for testing?
... original author possessed when they implemented the class. They provide a description of how that class behaves when used by a client.
You are correct to question the usefulness of doing this because it is possible to write unit tests that are useless, do not cover all of the code in question, bec...