大约有 44,000 项符合查询结果（耗时：0.0624秒） [XML]
Error while installing json gem 'mkmf.rb can't find header files for ruby'
...ols
ruby -rrbconfig -e 'puts RbConfig::CONFIG["rubyhdrdir"]'
This should now correctly print
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0
Likewise, gem install should work while that SDK is selected.
To sw...
Copying a HashMap in Java
...d structures, HashMap.putAll() will copy by reference, because it doesn't know how to exactly copy your object. For example:
import java.util.*;
class Playground {
public static void main(String[ ] args) {
Map<Integer, Map<Integer,List<Float>>> dataA = new HashMap<&...
What does {0} mean when initializing an object?
...cted non-static data members, no base classes, and no virtual functions.
Now, using {0} to initialize an aggregate like this is basically a trick to 0 the entire thing. This is because when using aggregate initialization you don't have to specify all the members and the spec requires that all uns...
Save ArrayList to SharedPreferences
...
I'm sorry, I don't have an Android SDK to test it now, but take a look here: benjii.me/2010/04/deserializing-json-in-android-using-gson . You should iterate over the json array and do what they do there for each object, hopefully I'll be able to post an edit to my answer wit...
Output data from all columns in a dataframe in pandas [duplicate]
...
I know this is an old question, but I have just had a similar problem and I think what I did would work for you too.
I used the to_csv() method and wrote to stdout:
import sys
paramdata.to_csv(sys.stdout)
This should dump t...
Xcode duplicate/delete line
... Switch to "XCode Default" and things should work. Tested on XCode 3.2 on Snow Leopard.
More information on Mac OS X key bindings: http://funkworks.blogspot.it/2013/03/republishing-of-wwwerasetotheleftcompos.html
share
...
How to print without newline or space?
...t to answer @Rishav flush empties the buffer and displays the output right now. Without flush you might have your exact text printed eventually, but only when the system gets around to processing the graphics instead of the IO. Flush makes the text visible immediately by "flushing" the cache.
...
java.net.ConnectException: Connection refused
...d a lot more information to be able to help you. (For one thing, we don't know what firewall you have...)
– Jon Skeet
Jan 19 '18 at 14:58
add a comment
|
...
Disable time in bootstrap date time picker
...to pick a date (which is what you want).
For v4: Bootstrap Datetimepicker now uses the format to determine if a time-component is present. If no time component is present, it won't let you choose a time (and hide the clock icon).
...
Which is the best Linux C/C++ debugger (or front-end to gdb) to help teaching programming? [closed]
...t it was removed from Debian and I can't install it on my Linux.. I don't know who's responsible, but he entered my list of mortal enemies and if I encounter him he'll face my wrath! Any-who; there's still a way to get it running but the UI is a little screwed-up: baptiste-wicht.com/2012/01/…
...