大约有 40,000 项符合查询结果（耗时：0.0581秒） [XML]
What's the difference between a proc and a lambda in Ruby?
...d to it. From ri Kernel#lambda:
Equivalent to Proc.new, except the resulting Proc objects check the number of parameters passed when called.
An example:
p = Proc.new {|a, b| puts a**2+b**2 } # => #<Proc:0x3c7d28@(irb):1>
p.call 1, 2 # => 5
p.call 1 # => NoMethodError: undefined...
What do people find difficult about C pointers? [closed]
... comment on the first one, >>*ip = 4; //sets the value of ip to '4'<< is wrong. It should be >>//sets the value of the thing pointed at by ip to '4'
– aaaa bbbb
Oct 26 '10 at 20:57
...
WebException how to get whole response with a body?
...ge, that includes the response body:
Here's my code (in Client.cs):
/// <summary>
/// Tries to rethrow the WebException with the data from the body included, if possible.
/// Otherwise just rethrows the original message.
/// </summary>
/// <param name="wex">The web excep...
What is PAGEIOLATCH_SH wait type in SQL Server?
...s that use indexes efficiently.
If your query is like this:
Select * from <table> where <col1> = <value> order by <PrimaryKey>
, check that you have a composite index on (col1, col_primary_key).
If you don't have one, then you'll need either a full INDEX SCAN if the PRIMARY ...
Infinite Recursion with Jackson JSON and Hibernate JPA issue
...flow error.
So, Jackson takes the forward part of the reference (your Set<BodyStat> bodyStats in Trainee class), and converts it in a json-like storage format; this is the so-called marshalling process. Then, Jackson looks for the back part of the reference (i.e. Trainee trainee in BodyStat c...
Detect network connection type on Android
... return false; // ~25 kbps
case TelephonyManager.NETWORK_TYPE_LTE: // API level 11
return true; // ~ 10+ Mbps
// Unknown
case TelephonyManager.NETWORK_TYPE_UNKNOWN:
default:
return false;
}
}else{
...
How to get names of classes inside a jar file?
...l Java classes contained inside a jar file at /path/to/jar/file.jar.
List<String> classNames = new ArrayList<String>();
ZipInputStream zip = new ZipInputStream(new FileInputStream("/path/to/jar/file.jar"));
for (ZipEntry entry = zip.getNextEntry(); entry != null; entry = zip.getNextEntr...
Sorting arraylist in alphabetical order (case insensitive)
...
Custom Comparator should help
Collections.sort(list, new Comparator<String>() {
@Override
public int compare(String s1, String s2) {
return s1.compareToIgnoreCase(s2);
}
});
Or if you are using Java 8:
list.sort(String::compareToIgnoreCase);
...
Return index of greatest value in an array
... }
var max = arr[0];
var maxIndex = 0;
for (var i = 1; i < arr.length; i++) {
if (arr[i] > max) {
maxIndex = i;
max = arr[i];
}
}
return maxIndex;
}
There’s also this one-liner:
let i = arr.indexOf(Math.max(...arr));
It p...
How does the vim “write with sudo” trick work?
...nything to another piped command in this case; we're just using tee as an alternate way of writing a file and so that we can call it with sudo.
Making this trick easy
You can add this to your .vimrc to make this trick easy-to-use: just type :w!!.
" Allow saving of files as sudo when I forgot to s...