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Immutability of Strings in Java
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str is not an object, it's a reference to an object. "Hello" and "Help!" are two distinct String objects. Thus, str points to a string. You can change what it points to, but not that which it points at.
Take this code, for exampl...
MySQL 'create schema' and 'create database' - Is there any difference
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CREATE DATABASE creates a database
with the given name. To use this
statement, you need the CREATE
privilege for the database. CREATE
SCHEMA is a synonym for CREATE
DATABASE as of MySQL 5.0.2.
So, it would seem normal that those two instruction do the same.
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Set 4 Space Indent in Emacs in Text Mode
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(customize-variable (quote tab-stop-list))
or add tab-stop-list entry to custom-set-variables in .emacs file:
(custom-set-variables
;; custom-set-variables was added by Custom.
;; If you edit it by hand, you could mess it up, so be careful.
;; Your init...
Can I get JSON to load into an OrderedDict?
Ok so I can use an OrderedDict in json.dump . That is, an OrderedDict can be used as an input to JSON.
6 Answers
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Entity framework self referencing loop detected [duplicate]
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Well the correct answer for the default Json formater based on Json.net is to set ReferenceLoopHandling to Ignore.
Just add this to the Application_Start in Global.asax:
HttpConfiguration config = GlobalConfiguration.Configuration;
config.Formatters.JsonFormatter
.SerializerSetting...
How to pass a function as a parameter in Java? [duplicate]
...oSomething(int param1, String param2);
}
then anywhere where MyInterface is used, you can substitute a lambda expression:
class MyClass {
public MyInterface myInterface = (p1, p2) -> { return p2 + p1; };
}
For example, you can create a new thread very quickly:
new Thread(() -> someMe...
How do I alter the position of a column in a PostgreSQL database table?
... column of
the pg_attribute table. The only way
to change column order is either by
recreating the table, or by adding
columns and rotating data until you
reach the desired layout.
That's pretty weak, but in their defense, in standard SQL, there is no solution for repositioning a column ...
How do I replace a character at a particular index in JavaScript?
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In JavaScript, strings are immutable, which means the best you can do is to create a new string with the changed content and assign the variable to point to it.
You'll need to define the replaceAt() function yourself:
String.prototype.replaceAt = function(index, replacement) {
return this...
Simplest way to do a fire and forget method in C#?
I saw in WCF they have the [OperationContract(IsOneWay = true)] attribute. But WCF seems kind of slow and heavy just to do create a nonblocking function. Ideally there would be something like static void nonblocking MethodFoo(){} , but I don't think that exists.
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How do I clone a subdirectory only of a Git repository?
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EDIT: As of Git 2.19, this is finally possible, as can be seen in this answer.
Consider upvoting that answer.
Note: in Git 2.19, only client-side support is implemented, server-side support is still missing, so it only works when cloning local rep...