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How to use `subprocess` command with pipes
I want to use subprocess.check_output() with ps -A | grep 'process_name' .
I tried various solutions but so far nothing worked. Can someone guide me how to do it?
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Check if a value is within a range of numbers
...out numeric comparisons, so regular expressions really have nothing to do with the issue. You don't need "multiple if" statements to do it, either:
if (x >= 0.001 && x <= 0.009) {
// something
}
You could write yourself a "between()" function:
function between(x, min, max) {
r...
How to escape a JSON string to have it in a URL?
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It seems though that it encodes more characters than necessary (when I paste the link in Firefox, some characters are reverted back (i.e. {["). Is there a way to encode only the characters necessary, so that I can shorten my ...
Getting Java version at runtime
... a Java bug in JDK 1.5 which was fixed in 1.6. I'm using the following condition:
12 Answers
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What version of Visual Studio is Python on my computer compiled with?
...follow
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edited Sep 15 '19 at 18:52
answered Apr 20 '10 at 16:34
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If threads share the same PID, how can they be identified?
...e kernel (looking from below) calls a PID.
In the kernel, each thread has it's own ID, called a PID (although it would possibly make more sense to call this a TID, or thread ID) and they also have a TGID (thread group ID) which is the PID of the thread that started the whole process.
Simplisticall...
Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)
...hing you can do is leave out the action attribute altogether. If you leave it out, the form will be submitted to the document's address, i.e. the same page.
It is also possible to leave it empty, and any browser implementing HTML's form submission algorithm will treat it as equivalent to the documen...
Is Big O(logn) log base e?
...data structures, I see the Big O notation is typically noted as O(logn). With a lowercase 'l' in log, does this imply log base e (n) as described by the natural logarithm? Sorry for the simple question but I've always had trouble distinguishing between the different implied logarithms.
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C#: Assign same value to multiple variables in single statement
Is there any way (just out of curiosity because I came across multiple same-value assignments to multiple variables today) in C# to assign one value to multiple variables at once in a single statements?
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What is the most robust way to force a UIView to redraw?
I have a UITableView with a list of items. Selecting an item pushes a viewController that then proceeds to do the following. from method viewDidLoad I fire off a URLRequest for data that is required by on of my subviews - a UIView subclass with drawRect overridden. When the data arrives from the clo...