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What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
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Simply put, you probably want a RuntimeError not an Exception. A rescue block without an argument will catch RuntimeErrors, but will NOT catch Exceptions. So if you raise an Exception in your code, this code will not catch it:
begin
rescue
end
In order to catch the Exception you will have to d...
How do you implement a re-try-catch?
...nto an infinite loop, in case the exception keeps on occurring in your try block.
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Is the NOLOCK (Sql Server hint) bad practice?
...ring index. UPDATE reaches an index range locked by the SELECT and becomes blocked. SPID 1) still seeking through the covering index, finds a range locked by the UPDATE and becomes blocked. DEADLOCK. Nothing can solve that deadlock (except catching SQL Server error 1205, and automatically retrying, ...
Is main() really start of a C++ program?
...:cout; however, some of the environment is controllable like static global blocks (for initializing static global variables). Note that since you don't have full control prior to main, you don't have full control on the order in which the static blocks get initialized.
After main, your code is con...
Call by name vs call by value in Scala, clarification needed
...e => Int then the generated code uses a reference to some sort of "code block" as the value of the expression. Either way, a value of that type can be passed to a function expecting a parameter of that type. I'm pretty sure you can do this with variable assignment, with no parameter passing in si...
How to convert all text to lowercase in Vim
...word processor). If you want to convert text to lowercase, create a visual block and press u (or U to convert to uppercase). Tilde (~) in command mode reverses case of the character under the cursor.
If you want to see all text in Vim in small caps, you might want to look at the guifont option, or t...
What is the difference between square brackets and parentheses in a regex?
...uestion uses keyword var in code, this probably is JavaScript). The use of php which runs on PCRE for preg matching will optimize away the lack of backtracking, however we're not in PHP either, so using classes [] instead of alternations | gives performance bonus as the match does not backtrack, and...
How do I fix the indentation of an entire file in Vi?
...es is =% standing on an opening bracket. It fixes the indents of the whole block.
– PEZ
Feb 3 '09 at 8:05
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Coding Practices which enable the compiler/optimizer to make a faster program
...ad to calculate a checksum on a 2GB file. This optimization combined with block reading improved performance from 1 hour to 5 minutes. Loop unrolling provided excellent performance in assembly language too, my memcpy was a lot faster than the compiler's memcpy. -- T.M.
Reduction of if statements...
What is the rationale for fread/fwrite taking size and count as arguments?
...id a lot of work with filesystem specs and FTP and records/pages and other blocking concepts are very firmly supported, although nobody uses those parts of the specs anymore.
– Matt Joiner
Sep 19 '10 at 4:58
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