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sed fails with “unknown option to `s'” error [closed]
...expression "s@pattern@$replacement@"
Note that this is not bullet proof: if the replacement string later contains @ it will break for the same reason, and any backslash sequences like \1 will still be interpreted according to sed rules. Using | as a delimiter is also a nice option as it is similar...
Append an array to another array in JavaScript [duplicate]
...
If you want to modify the original array instead of returning a new array, use .push()...
array1.push.apply(array1, array2);
array1.push.apply(array1, array3);
I used .apply to push the individual members of arrays 2 and 3...
When and why should I use a namedtuple instead of a dictionary? [duplicate]
...n -- their key-equivalents, "field names", have to be strings.
Basically, if you were going to create a bunch of instances of a class like:
class Container:
def __init__(self, name, date, foo, bar):
self.name = name
self.date = date
self.foo = foo
self.bar = bar...
jQuery dot in ID selector? [duplicate]
...hing") with double-quotes, it didn't work. Do you have any idea about the difference between single-quote and double-quotes in jQuery?
– Kewei Shang
Apr 23 '12 at 10:14
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How do I write a Python dictionary to a csv file? [duplicate]
...to write a single row.
You will also want to use DictWriter.writeheader() if you want a header for you csv file.
You also might want to check out the with statement for opening files. It's not only more pythonic and readable but handles closing for you, even when exceptions occur.
Example with th...
Exported service does not require permission: what does it mean?
...e that is bound by other applications through AIDL, and I add it to the manifest as follows:
3 Answers
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How to upgrade R in ubuntu? [closed]
...hatever version of Ubuntu you are using (eg, trusty/, xenial/, and so on). If you're getting a "Malformed line error", check to see if you have a space between /ubuntu/ and version/.
Fetch the secure APT key:
gpg --keyserver keyserver.ubuntu.com --recv-key E084DAB9
or
gpg --hkp://keyserver keyse...
Eclipse reported “Failed to load JNI shared library” [duplicate]
...e java executable. See
http://wiki.eclipse.org/Eclipse.ini for examples.
If you're unsure of what version (64-bit or 32-bit) of Eclipse you have installed, you can determine that a few different ways. See How to find out if an installed Eclipse is 32 or 64 bit version?
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How to preserve insertion order in HashMap? [duplicate]
...urned in (often the same) random order. But the data was inserted in a specific order, and I need to preserve the insertion order. How can I do this?
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Add Favicon to Website [duplicate]
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Simply put a file named favicon.ico in the webroot.
If you want to know more, please start reading:
Favicon on Wikipedia
Favicon Generator
How to add a Favicon by W3C (from 2005 though)
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