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gem install: Failed to build gem native extension (can't find header files)
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For those who may be confused by the accepted answer, as I was, you also need to have the ruby headers installed [ruby-devel].
The article that saved my hide is here.
And this is the revised solution (note that I'm on Fedora 13):
yum -y install gcc mys...
Is there a JavaScript function that can pad a string to get to a determined length?
...Test
See the jsPerf test here.
And this is faster than ES6 string.repeat by 2x as well, as shown by the revised JsPerf here
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JavaScript arrays braces vs brackets
...on: myObject["someValue"] or myObject.someValue . The empty object created by {} will of course not have those properties, but you can assign to them in the same way: myObject.someValue = "hello!"
– johusman
Feb 26 '11 at 20:39
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Understand homebrew and keg-only dependencies
...tructions to use the files in /usr/local/Cellar. That's done automatically by brew install when a formula specifies keg-only dependencies.
Formulas that specify keg-only dependencies make sure that the equivalent system libraries are not used. Your installation of vips is linked against a specific ...
Hibernate vs JPA vs JDO - pros and cons of each? [closed]
...any ways to look at this, but my advice would be:
If you are not worried by the prospect of vendor tie-in, then make your choice between Hibernate, and other JPA and JDO implementations including the various vendor specific extensions in your decision making.
If you are worried by the prospect of ...
Using member variable in lambda capture list inside a member function
...e member:
auto& tmp = grid;
auto lambda = [ tmp](){}; // capture grid by (a single) copy
auto lambda = [&tmp](){}; // capture grid by ref
C++14:
auto lambda = [ grid = grid](){}; // capture grid by copy
auto lambda = [&grid = grid](){}; // capture grid by ref
example: https://godbo...
Is there a faster/shorter way to initialize variables in a Rust struct?
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You can provide default values for your struct by implementing the Default trait. The default function would look like your current new function:
impl Default for cParams {
fn default() -> cParams {
cParams {
iInsertMax: -1,
iUpdate...
How to resize a VirtualBox vmdk file
...researching why the clonehed keeps creating volumes that are not supported by the --resize. Turns out that appending --format vdi to the clonehd is crucial!
– datv
Dec 3 '17 at 6:47
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How to exclude a file extension from IntelliJ IDEA search?
...nsion from the results in IntelliJ IDEA's " Find in Path " dialog (invoked by CTRL + SHIFT + F )? I want to exclude all .css files.
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Type.GetType(“namespace.a.b.ClassName”) returns null
... the type exists, it's in a different class library, and i need to get it by string name
– Omu
Dec 1 '09 at 9:58
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