大约有 49,000 项符合查询结果（耗时：0.0771秒） [XML]
How to extract text from a string using sed?
...
I tried sed -n '/[0-9]\+G[0-9]\+/p'. Now it just prints the whole string
– RanRag
Jul 19 '12 at 20:43
...
Argparse: Required argument 'y' if 'x' is present
...
How about using parser.parse_known_args() method and then adding the --lport and --rport args as required args if --prox is present.
# just add --prox arg now
non_int = argparse.ArgumentParser(description="stackoverflow question",
...
Android phone orientation overview including compass
... sensors for a while.
I thought I understood it. Then I realised I didn't. Now I think (hope) I have a better feeling for it again but I am still not 100%. I will try and explain my patchy understanding of it and hopefully people will be able to correct me if I am wrong in parts or fill in any blank...
How to get the currently logged in user's user id in Django?
...d sessions
sessions = Session.objects.filter(expire_date__gte=timezone.now())
user_id_list = []
# build list of user ids from query
for session in sessions:
data = session.get_decoded()
# if the user is authenticated
if data.get('_auth_user_id'):
u...
.keyCode vs. .which
...
If you are staying in vanilla Javascript, please note keyCode is now deprecated and will be dropped:
This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Avoid using it and update existing code if possib...
SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
...url.haxx.se/ca/cacert.pem. Save this file to C:\RailsInstaller\cacert.pem.
Now make ruby aware of your certificate authority bundle by setting SSL_CERT_FILE. To set this in your current command prompt session, type:
set SSL_CERT_FILE=C:\RailsInstaller\cacert.pem
To make this a permanent setting, ad...
Acronyms in CamelCase [closed]
... an abbreviation of "identifier" or "identification"), but I don't really know how/if this guideline helps with that one. :-\
– bryant
Apr 16 '14 at 4:23
68
...
Scanner is skipping nextLine() after using next() or nextFoo()?
... skip this you have to add the input.nextLine(). Hope this should be clear now.
Try it like that:
System.out.print("Insert a number: ");
int number = input.nextInt();
input.nextLine(); // This line you have to add (It consumes the \n character)
System.out.print("Text1: ");
String text1 = input.nex...
How to change line color in EditText
... android:backgroundTint="@android:color/holo_red_light" />
Update 3
Now We have with back support AppCompatEditText
Note: We need to use app:backgroundTint instead of android:backgroundTint
<android.support.v7.widget.AppCompatEditText
android:layout_width="match_parent"
android:layou...
What is the easiest way to initialize a std::vector with hardcoded elements?
...l_element). The type is already given with the <int>, so the vector knows how much is one element. Remember that iterators can be treated as pointers so you're basically using the vector(iterator begin, iterator end) constructor
– Johnny Pauling
Aug 17 '1...