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MySQL: Large VARCHAR vs. TEXT?
...alue on a given row fits in the page size (16KB and each page must hold at least two rows). If the string is too large for that, it overflows to additional pages. See mysqlperformanceblog.com/2010/02/09/blob-storage-in-innodb for a detailed explanation.
– Bill Karwin
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What is the 'new' keyword in JavaScript?
...his in a function is the object that called the function. In Javascript at least.
Now, call it like this with new:
var bar = new Foo();
What happens when you add new to a function call is that a new object is created (just var bar = new Object()) and that the this within the function points to ...
Should you commit .gitignore into the Git repos?
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It is a good practice to .gitignore at least your build products (programs, *.o, etc.).
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How do I address unchecked cast warnings?
...e, is not to do the unchecked cast.
If it's absolutely necessary, then at least try to limit the scope of the @SuppressWarnings annotation. According to its Javadocs, it can go on local variables; this way, it doesn't even affect the entire method.
Example:
@SuppressWarnings("unchecked")
Map<S...
Why use a READ UNCOMMITTED isolation level?
... would not be retrieving data "a few seconds out of date". It would (or at least could if the transaction that wrote the data you read gets rolled back) be retrieving data that doesn't exist or was never committed. Am I mistaken?
– xr280xr
May 11 '11 at 22:25
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Calculate relative time in C#
...calculation, but a day to day calculation. So yes, this is a wrong code at least in two frequent case.
– CtrlX
Sep 26 '13 at 15:47
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How can I propagate exceptions between threads?
...at exception_ptr is a shared ptr-like pointer, so you will need to keep at least one exception_ptr pointing to each exception or they will be released.
Microsoft specific: if you use SEH Exceptions (/EHa), the example code will also transport SEH exceptions like access violations, which may not be ...
Process all arguments except the first one (in a bash script)
...st looks fairly old, the easiest solution in bash is illustrated below (at least bash 4) using set -- "${@:#}" where # is the starting number of the array element we want to preserve forward:
#!/bin/bash
someVar="${1}"
someOtherVar="${2}"
set -- "${@:3}"
input=${@}
[[ "${i...
Warning “Do not Access Superglobal $_POST Array Directly” on Netbeans 7.4 for PHP
...ng filtered. This problem might just be a Netbeans bug (in version 8.1 at least).
– user3640967
Jan 5 '16 at 10:11
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Can you get DB username, pw, database name in Rails?
...I think this is the simplest solution. After some testing (in Rails 5.2 at least) this will resolve DATABASE_URL correctly.
ActiveRecord::Base.configurations[Rails.env]
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