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mkdir's “-p” option
...r fingertips: man mkdir yields this about -p switch:
-p, --parents
no error if existing, make parent directories as needed
Use case example: Assume I want to create directories hello/goodbye but none exist:
$mkdir hello/goodbye
mkdir:cannot create directory 'hello/goodbye': No such file or d...
How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version
... about the bootstrap class path not being set. More information about this error is available in a blog post New javac warning for setting an older source without bootclasspath.
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Load and execute external js file in node.js with access to local variables?
...TE yourExternalJsFile.js
child_process.exec('node yourExternalJsFile.js', (error, stdout, stderr) => {
console.log(`${stdout}`);
console.log(`${stderr}`);
if (error !== null) {
console.log(`exec error: ${error}`);
}
});
...
Apache Proxy: No protocol handler was valid
...s was happening for me in my Apache/2.4.18 (Ubuntu) setup. In my case, the error I was seeing was:
... AH01144: No protocol handler was valid for the URL /~socket.io/. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.
T...
Is there a minlength validation attribute in HTML5?
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@ChaZ @Basj You can add a custom error message by adding the following attribute: oninvalid="this.setCustomValidity('Your message')"
– bigtex777
Nov 26 '14 at 20:31
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Read only file system on Android
...ild.prop and when I do adb push build.prop /system/ I get the following error: failed to copy 'c:\build.prop' to '/system//build.prop': Read-only file system .
...
What is the use of static variable in C#? When to use it? Why can't I declare the static variable in
...able for all instances, the code this.permament will result in compilation errors because it can be recalled that this.variablename refers to the instance variable name. Thus, static variables are to be accessed directly, as indicated in the code.
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COALESCE Function in TSQL
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Your last code example should give the error 'At least one of the arguments to COALESCE must be a typed NULL' Source: sql-server-performance.com/2007/…
– maqk
Sep 24 '13 at 10:52
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Namespace and class with the same name?
...using Foo;
using Bar;
class C { Foo foo; }
}
The compiler gives an error. “Foo” is ambiguous between Foo.Foo and
Bar.Foo. Bummer. I guess I’ll fix that by fully qualifying the name:
class C { Foo.Foo foo; }
This now gives the ambiguity error “Foo in
Foo.Foo is ambiguous between ...
How do I convert a hexadecimal color to rgba with the Less compiler?
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How about this error I got? error evaluating function 'red': Cannot read property '0' of undefined
– Aldi Unanto
Sep 13 '13 at 15:41
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