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Efficient SQL test query or validation query that will work across all (or most) databases
...for idleness. For example, the JDBC pooling library c3p0 has a property called preferredTestQuery , which gets executed on the connection at configured intervals. Similarly, Apache Commons DBCP has validationQuery .
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Disable messages upon loading a package
...y R script is being used for further analysis I want to completely disable all of this output. How do I do that? Furthermore, I'd prefer to do it without having to modify ROCR at all, so that future users of this script don't have to do that either.
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Passing a URL with brackets to curl
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For me it worked - on OS X High Sierr, curl 7.54.0 (x86_64-apple-darwin17.0) libcurl/7.54.0.
– Shade
Jun 19 '18 at 10:48
1
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What does the smiley face “:)” mean in CSS?
...wsers.
Also there's a hack for <= IE 8:
div {
color: blue; /* All browsers */
color: purple\9; /* IE8 and earlier */
*color: pink; /* IE7 and earlier */
}
However that's not a good idea, they don't validate. You always feel free to work with Conditional comments for targeting...
How can I fix WebStorm warning “Unresolved function or method” for “require” (Firefox Add-on SDK)
... edited Apr 25 at 9:45
MARSHMALLOW
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answered Nov 22 '13 at 15:10
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Get a list of resources from classpath directory
I am looking for a way to get a list of all resource names from a given classpath directory, something like a method List<String> getResourceNames (String directoryName) .
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Python: How to create a unique file name?
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I didn't think your question was very clear, but if all you need is a unique file name...
import uuid
unique_filename = str(uuid.uuid4())
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Finding child element of parent pure javascript
...esire.
Edit: Now that I think about it, you could just use querySelectorAll to get decendents of parent having a class name of child1:
children = document.querySelectorAll('.parent .child1');
The difference between qS and qSA is that the latter returns all elements matching the selector, while...
Detect whether there is an Internet connection available on Android [duplicate]
...er downtime, low signal, captive portals, content filters and the like can all prevent your app from reaching a server. For instance you can't tell for sure if your app can reach Twitter until you receive a valid response from the Twitter service.
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ArrayList vs List in C#
...face and can be used easily in LINQ (without requiring any Cast or OfType call).
ArrayList belongs to the days that C# didn't have generics. It's deprecated in favor of List<T>. You shouldn't use ArrayList in new code that targets .NET >= 2.0 unless you have to interface with an old API t...