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How do I test if a variable is a number in Bash?
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@Ben do you really want to handle more than one minus sign? I'd make it ^-? rather than ^-* unless you're actually doing the work to handle multiple inversions correctly.
– Charles Duffy
Jun 26 '11 at 22:57
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Prevent form submission on Enter key press
...checking and most likely will only work in IE. To do this right you need a more robust solution, but you will get the general idea.
function runScript(e) {
//See notes about 'which' and 'key'
if (e.keyCode == 13) {
var tb = document.getElementById("scriptBox");
eval(tb.value...
Renaming the current file in Vim
... @AaronMahan I've fixed Rename2.vim (disregarding the smarter but more complex DelvarWorld version) to allow for spaces in paths and forked it here: github.com/aehlke/vim-rename3 Feel free to submit pull requests for even smarter functionality!
– aehlke
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When should I use a struct rather than a class in C#?
...e on the basis that it's an internal type only, performance was considered more important than semantics, or some other excuse. My point is that a type like Rectangle should have its contents exposed as individually-editable fields not "because" the performance benefits outweigh the resulting seman...
How much of a git sha is *generally* considered necessary to uniquely identify a change in a given c
... Chapter 7 of the Pro Git book:
Generally, eight to ten characters are more than enough to be unique
within a project. One of the largest Git projects, the Linux kernel,
is beginning to need 12 characters out of the possible 40 to stay
unique.
7 digits is the Git default for a short SHA,...
Approximate cost to access various caches and main memory?
... and Xeon range of processors. I should stress, this has what you need and more (for example, check page 22 for some timings & cycles for example).
Additionally, this page has some details on clock cycles etc. The second link served the following numbers:
Core i7 Xeon 5500 Series Data Source...
Why C# implements methods as non-virtual by default?
...ava, why does C# treat methods as non-virtual functions by default? Is it more likely to be a performance issue rather than other possible outcomes?
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Check if a string is a date value
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Initialize a byte array to a certain value, other than the default null? [duplicate]
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Hmmm... not a bad suggestion. That would indeed be both more efficient and more readable than the Enumerable method. Thanks for the input.
– DeVil
May 27 '11 at 9:45
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How can I check if a key exists in a dictionary? [duplicate]
...g
Associative arrays are called dictionaries in Python and you can learn more about them in the stdtypes documentation.
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