大约有 44,000 项符合查询结果（耗时：0.0349秒） [XML]
Printing everything except the first field with awk
...for loop:
awk '{for (i=2; i<=NF; i++) print $i}' filename
So if your string was "one two three", the output will be:
two
three
If you want the result in one row, you could do as follows:
awk '{for (i=2; i<NF; i++) printf $i " "; print $NF}' filename
This will give you: "two three"
...
Finding Key associated with max Value in a Java Map
...s with maximum value
public class NewClass4 {
public static void main(String[] args)
{
HashMap<Integer,Integer>map=new HashMap<Integer, Integer>();
map.put(1, 50);
map.put(2, 60);
map.put(3, 30);
map.put(4, 60);
map.put(5, 60);
...
Rails where condition using NOT NIL
...S NOT NULL
Note that this syntax reports a deprecation (it talks about a string SQL snippet, but I guess the hash condition is changed to string in the parser?), so be sure to add the references to the end:
Foo.includes(:bar).where.not(bars: {id: nil}).references(:bar)
DEPRECATION WARNING: I...
How to pass all arguments passed to my bash script to a function of mine? [duplicate]
...t want to do:
"$*" gives all of the arguments stuck together into a single string (separated by spaces, or whatever the first character of $IFS is). This looses the distinction between spaces within arguments and the spaces between arguments, so is generally a bad idea. Although it might be ok for p...
find() with nil when there are no records
...ou already have a block such as a controller method. In that case the only extra line you need is the rescue line. Much more elegant and easier to handle than checking for nil with an if statement.
– morgler
Aug 1 '17 at 7:30
...
How to set commands output as a variable in a batch file
...SET var=%%F
)
ECHO %var%
I always use the USEBACKQ so that if you have a string to insert or a long file name, you can use your double quotes without screwing up the command.
Now if your output will contain multiple lines, you can do this
SETLOCAL ENABLEDELAYEDEXPANSION
SET count=1
FOR /F "token...
Best way for a 'forgot password' implementation? [closed]
...s the time when the user pressed the "Forgot Password" button. The ID is a string. A long random string is created (say, a GUID) and then hashed like a password (which is a separate topic in and of itself). This hash is then used as the 'ID' in the table.
The system sends an email to the user which ...
Differences between Octave and MATLAB? [closed]
...cking to a superior syntax... if you had the freedom to change Matlab, add extra syntax or different functions, wouldn't you? These are features that users implemented and they don't break compatibility. More often that not, new things are rejected on grounds of that. The idea is that Matlab languag...
How do I enable standard copy paste for a TextView in Android?
... cManager.setPrimaryClip(cData);
Util.toast(mContext, string.text_copyed);
return true;
}
});
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How does zip(*[iter(s)]*n) work in Python?
... of n times the same iterator for s.
So, when doing zip(*[iter(s)]*n), it extracts an item from all the three iterators from the list in order. Since all the iterators are the same object, it just groups the list in chunks of n.
...