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What's an easy way to read random line from a file in Unix command line?
...
You can use shuf:
shuf -n 1 $FILE
There is also a utility called rl. In Debian it's in the randomize-lines package that does exactly what you want, though not available in all distros. On its home page it actually recommends the use of shuf instead (which didn't exist when it was cr...
How do I convert from int to String?
I'm working on a project where all conversions from int to String are done like this:
20 Answers
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Change values while iterating
...{
[]Attribute{
{"key", "value"},
{"href", "http://www.google.com"},
},
}
fmt.Println(n)
for i := 0; i < len(n.Attr); i++ {
attr := &n.Attr[i]
if attr.Key == "href" {
attr.Val = "something"
}
}
fm...
Automatic vertical scroll bar in WPF TextBlock?
...g its vertical height. I expected a vertical scroll bar to appear automatically when that happens, but it didn't. I tried to look for a scroll bar property in the Properties pane, but could not find one.
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SQLAlchemy - Getting a list of tables
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All of the tables are collected in the tables attribute of the SQLAlchemy MetaData object. To get a list of the names of those tables:
>>> metadata.tables.keys()
['posts', 'comments', 'users']
If you're using the...
How to get the current time in milliseconds from C in Linux?
...s */
long tv_nsec; /* nanoseconds */
};
More details here: https://stackoverflow.com/a/36095407/895245
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How to read a text-file resource into Java unit test? [duplicate]
..., you just need to convert it into a string. This resource spells it out: http://www.kodejava.org/examples/266.html. However, I'll excerpt the relevent code:
public String convertStreamToString(InputStream is) throws IOException {
if (is != null) {
Writer writer = new StringWriter();
...
UIBarButtonItem with custom image and no border
...ation code here
}
@end
So anywhere in your code you can create bar item calling this method (provided that you include a header with its declaration).
P.S. You do not need to use 'v' UIView as you can create UIBarButtonItem with a button as custom view directly.
P.P.S. You also need [forward rel...
离线版启动超时，有报错日志 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
...ava.base/java.net=ALL-UNNAMED, --add-opens, java.base/sun.net.www.protocol.http=ALL-UNNAMED, --add-opens, java.base/sun.net.www.protocol.https=ALL-UNNAMED, -Dfile.encoding=UTF-8, -classpath, D:\appinventor\AppInventor2\resources\app.asar.unpacked\AppEngine\bin\..\lib\appengine-tools-api.jar, com.goo...
Time complexity of Sieve of Eratosthenes algorithm
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...