大约有 43,000 项符合查询结果（耗时：0.0454秒） [XML]
using statement with multiple variables [duplicate]
...e accepted way is just to chain the statements:
using (var sr = new StringReader(content))
using (var xtr = new XmlTextReader(sr))
{
obj = XmlSerializer.Deserialize(xtr) as TModel;
}
Note that the IDE will also support this indentation, i.e. it intentionally won’t try to indent the second u...
Select Pandas rows based on list index
...
For large datasets, it is memory efficient to read only selected rows via the skiprows parameter.
Example
pred = lambda x: x not in [1, 3]
pd.read_csv("data.csv", skiprows=pred, index_col=0, names=...)
This will now return a DataFrame from a file that skips all rows exc...
Attach IntelliJ IDEA debugger to a running Java process
...lick "OK" to save:
JVM Options
The configuration above provides three read-only fields. These are options that tell the JVM to open up port 5005 for remote debugging when running your application. Add the appropriate one to the JVM options of the application you are debugging. One way you might...
Difference between pre-increment and post-increment in a loop?
...i++); // Prints 0
int j = 0;
Console.WriteLine(++j); // Prints 1
i++ reads the value of i then increments it.
++i increments the value of i then reads it.
share
|
improve this answer
...
Any way to make a WPF textblock selectable?
...
Use a TextBox with these settings instead to make it read only and to look like a TextBlock control.
<TextBox Background="Transparent"
BorderThickness="0"
Text="{Binding Text, Mode=OneWay}"
IsReadOnly="True"
TextWrapping="Wrap" />
...
How to access route, post, get etc. parameters in Zend Framework 2
...ethods to make it easy to access different types of parameters. As always, reading the tests can prove valuable to understand how something is supposed to be used.
Get a single value
To get the value of a named parameter in a controller, you will need to select the appropriate method for the type of...
Grep only the first match and stop
..., --text, process a binary file as if it were text
-m 1, --max-count, stop reading a file after 1 matching line
-h, --no-filename, suppress the prefixing of file names on output
-r, --recursive, read all files under a directory recursively
...
Return HTTP status code 201 in flask
...
You can read about it here.
return render_template('page.html'), 201
share
|
improve this answer
|
follow...
Select random lines from a file
... 0.01s system 80% cpu 0.047 total
The reason it is so fast, well I don't read the whole file and just move the file pointer 10 times and print the line after the pointer.
Gitlab Repo
Old attempt
First I needed a file of 78.000.000.000 lines:
seq 1 78 | xargs -n 1 -P 16 -I% seq 1 1000 | xargs -n 1 ...
How to post data in PHP using file_get_contents?
...ontents($fp);
if ($response === false)
{
throw new Exception("Problem reading data from $sUrl, $php_errormsg");
}
share
|
improve this answer
|
follow
|
...