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How to select lines between two marker patterns which may occur multiple times with awk/sed
...ing awk or sed how can I select lines which are occurring between two different marker patterns? There may be multiple sections marked with these patterns.
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How to Convert JSON object to Custom C# object?
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This works like a champ, but what if i have multiple items in my json and i want to make an object list?
– Djeroen
Feb 15 '16 at 17:41
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How can I match a string with a regex in Bash?
...= operator:
[[ sed-4.2.2.tar.bz2 == *tar.bz2 ]] && echo matched
If portability is not a concern, I recommend using [[ instead of [ or test as it is safer and more powerful. See What is the difference between test, [ and [[ ? for details.
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How to detect if URL has changed after hash in JavaScript
How can I check if a URL has changed in JavaScript? For example, websites like GitHub, which use AJAX, will append page information after a # symbol to create a unique URL without reloading the page. What is the best way to detect if this URL changes?
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How to get the caller's method name in the called method?
...t's dependent on the CPython implementation, so code using this will break if you ever try to use PyPy or Jython or other runtimes. that's fine if you're just developing and debugging locally but not really something you want in your production system.
– robru
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How to remove elements from a generic list while iterating over it?
...umerable.Range(1, 10));
for (int i = list.Count - 1; i >= 0; i--)
{
if (list[i] > 5)
list.RemoveAt(i);
}
list.ForEach(i => Console.WriteLine(i));
Alternately, you can use the RemoveAll method with a predicate to test against:
safePendingList.RemoveAll(item => item.Value ==...
Join/Where with LINQ and Lambda
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I find that if you're familiar with SQL syntax, using the LINQ query syntax is much clearer, more natural, and makes it easier to spot errors:
var id = 1;
var query =
from post in database.Posts
join meta in database.Post_Metas on...
Full examples of using pySerial package [closed]
...rt time
import serial
# configure the serial connections (the parameters differs on the device you are connecting to)
ser = serial.Serial(
port='/dev/ttyUSB1',
baudrate=9600,
parity=serial.PARITY_ODD,
stopbits=serial.STOPBITS_TWO,
bytesize=serial.SEVENBITS
)
ser.isOpen()
print...
How to find all occurrences of a substring?
...t() for m in re.finditer('test', 'test test test test')]
#[0, 5, 10, 15]
If you want to find overlapping matches, lookahead will do that:
[m.start() for m in re.finditer('(?=tt)', 'ttt')]
#[0, 1]
If you want a reverse find-all without overlaps, you can combine positive and negative lookahead in...
How to get a variable value if variable name is stored as string?
How can I retrieve a bash variable value if I have the variable name as string?
7 Answers
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