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JavaScript hashmap equivalent
...ache the hash value in the object itself (for example, in a property named __hash).
A hash function which does this is and works for both primitive values and objects is:
function hash(value) {
return (typeof value) + ' ' + (value instanceof Object ?
(value.__hash || (value.__hash = ++ar...
How to check whether a script is running under Node.js?
...e server.
var root = this;
// Create a reference to this
var _ = new Object();
var isNode = false;
// Export the Underscore object for **CommonJS**, with backwards-compatibility
// for the old `require()` API. If we're not in CommonJS, add `_` to the
// global object....
Number of elements in a javascript object
...et it.
In the past, Mozilla's Javascript variant exposed the non-standard __count__, but it has been removed with version 1.8.5.
For cross-browser scripting you're stuck with explicitly iterating over the properties and checking hasOwnProperty():
function countProperties(obj) {
var count = 0;...
Creating a daemon in Linux
...r state-less protocols (such as syslog, DNS), a daemon implementing socket-based activation can be restarted without losing a single request. See below for details.
If applicable, a daemon should notify the init system about startup completion or status updates via the sd_notify(3) interface.
In...
How to call a stored procedure from Java and JPA
...StoredProcedureQuery storedProcedure = em.createStoredProcedureQuery("sales_tax");
// set parameters
storedProcedure.registerStoredProcedureParameter("subtotal", Double.class, ParameterMode.IN);
storedProcedure.registerStoredProcedureParameter("tax", Double.class, ParameterMode.OUT);
storedProcedure...
Access an arbitrary element in a dictionary in Python
...
this looks better: dict.values().__iter__().__next__() :)
– Vitaly Zdanevich
Mar 3 '17 at 14:26
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How do I pass the this context to a function?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Mailto links do nothing in Chrome but work in Firefox?
...lt mail client. See this link on how to do that: kb.mozillazine.org/Default_mail_client#Windows
– kennypu
Mar 12 '15 at 23:15
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Bad class file magic or version
...
my JAVA_HOME variable changed to Java 1.8 and I got this error message when compiling a pure java module as a dependency of my android project.
build.gradle of the java module
apply plugin: 'java'
Solution #1: Quick an dirty
I ...
How to minify php page html output?
... if someone is not happy to use bulky class with DOM parsing this solution based on regexp works great
– Peter
Oct 12 '15 at 9:26
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