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How do I print the type of a variable in Rust?
... @JIXiang: the Rust Language Server is all about providing this information to an IDE, but it’s not mature yet—its first alpha release was only a couple of days ago. Yes, this is an eldritch approach; yes, less esoteric ways of achieving the goal are steadily coming.
...
CSS text-overflow: ellipsis; not working?
...ee to experiment with the other points as well; I've tried to give as much info as possible to help you understand how these things interact together; a large part of understanding CSS is about understanding how various styles work together.
Here's a snippet with your code, with a display:inline-bl...
How do I check in SQLite whether a table exists?
...
Use:
PRAGMA table_info(your_table_name)
If the resulting table is empty then your_table_name doesn't exist.
Documentation:
PRAGMA schema.table_info(table-name);
This pragma returns one row for each column in the named table. Columns in the r...
Get property value from string using reflection
...null) { return null; }
Type type = obj.GetType();
PropertyInfo info = type.GetProperty(part);
if (info == null) { return null; }
obj = info.GetValue(obj, null);
}
return obj;
}
public static T GetPropValue<T>(this Object obj, String name) {
Object...
How to find the Windows version from the PowerShell command line
... access the OSVersion property of the System.Environment class to get this information. For the version number, there is the Version property.
For example,
PS C:\> [System.Environment]::OSVersion.Version
Major Minor Build Revision
----- ----- ----- --------
6 1 7601 65536
D...
R script line numbers at error?
...a script as you want on an error condition, so you should just decide what information you need for debugging.
Otherwise, if there are specific areas you're concerned about (e.g. connecting to a database), then wrap them in a tryCatch() function.
...
Find the index of a dict within a list, by matching the dict's value
...urn dict((d[key], dict(d, index=index)) for (index, d) in enumerate(seq))
info_by_name = build_dict(lst, key="name")
tom_info = info_by_name.get("Tom")
# {'index': 1, 'id': '2345', 'name': 'Tom'}
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Rebase array keys after unsetting elements
...rather than unset:
$array = array(1,2,3,4,5);
foreach($array as $i => $info)
{
if($info == 1 || $info == 2)
{
array_splice($array, $i, 1);
}
}
print_r($array);
Working sample here.
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Flask raises TemplateNotFound error even though template file exists
...plate loaded, you'll get a report logged to the Flask app.logger, at level INFO.
This is what it looks like when a search is successful; in this example the foo/bar.html template extends the base.html template, so there are two searches:
[2019-06-15 16:03:39,197] INFO in debughelpers: Locating tem...
What's the difference between getRequestURI and getPathInfo methods in HttpServletRequest?
...
getPathInfo() gives the extra path information after the URI, used to access your Servlet, where as getRequestURI() gives the complete URI.
I would have thought they would be different, given a Servlet must be configured with its o...