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How to create a density plot in matplotlib?
... with R. This is because gaussian_kde tries to infer the bandwidth automatically. You can play with the bandwidth in a way by changing the function covariance_factor of the gaussian_kde class. First, here is what you get without changing that function:
However, if I use the following code:
impor...
Why doesn't .NET/C# optimize for tail-call recursion?
...en was responsible for the machine code.
The CLR itself does support tail call optimization, but the language-specific compiler must know how to generate the relevant opcode and the JIT must be willing to respect it.
F#'s fsc will generate the relevant opcodes (though for a simple recursion it may ...
The best way to remove duplicate values from NSMutableArray in Objective-C?
...rray *copy = [mutableArray copy];
NSInteger index = [copy count] - 1;
for (id object in [copy reverseObjectEnumerator]) {
if ([mutableArray indexOfObject:object inRange:NSMakeRange(0, index)] != NSNotFound) {
[mutableArray removeObjectAtIndex:index];
}
index--;
}
[copy release];
...
Execute and get the output of a shell command in node.js
... now.
var exec = require('child_process').exec;
function execute(command, callback){
exec(command, function(error, stdout, stderr){ callback(stdout); });
};
Example: Retrieving git user
module.exports.getGitUser = function(callback){
execute("git config --global user.name", function(name...
Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
...s, and move constructing it into a value_type.
That is what some people call universal reference, but really is reference collapsing. In your case, where the argument is an lvalue of type pair<int,shared_ptr<int>> it will not result in the argument being an rvalue reference and it sho...
Exclude all transitive dependencies of a single dependency
...he app module yet). I found this to work:
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>app</artifactId>
<version>${project.version}</version>
<exclusions>
<exclusion>
<groupId>*</gro...
What's the difference between ES6 Map and WeakMap?
...s you see, after removing k1 key from the memory we can still access it inside the map. At the same time removing k2 key of WeakMap removes it from wm as well by reference.
That's why WeakMap hasn't enumerable methods like forEach, because there is no such thing as list of WeakMap keys, they are ju...
When should I use a table variable vs temporary table in sql server?
...o object types. This also addresses your question about disk vs memory (I didn't see any significant difference in behaviour between the two).
Regarding the question in the title though as to when to use a table variable vs a local temporary table you don't always have a choice. In functions, for e...
实战低成本服务器搭建千万级数据采集系统 - 更多技术 - 清泛网 - 专注C/C++...
...法。由于有两个表作为数据插入表，使用数据库表的自增id并不太合适，需要一个高速的唯一自增Id服务器提供生成分布式ID。另数据库完全可以关闭写事务日志 ，提高性能，因为抓取的数据当时丢失再启动抓取就可以了， 这样...
Finalize vs Dispose
... difference between Dispose and Finalize (btw the Finalize method is still called a destructor in the language specification), so I'll just add a little about the scenarios where the Finalize method comes in handy.
Some types encapsulate disposable resources in a manner where it is easy to use and ...