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Is volatile expensive?
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If you look at the 2 references to getstatic, the first involves a load from memory, the second skips the load as the value is reused from the register(s) it is already loaded into (long is 64 bit and on my 32 bit laptop it uses 2 registers).
If we make the l variable volatile the resulting asse...
Split a String into an array in Swift?
...OS (10.0 and later)
if let nameComps = nameFormatter.personNameComponents(from: name) {
nameComps.namePrefix // Mr.
nameComps.givenName // Steven
nameComps.middleName // Paul
nameComps.familyName // Jobs
nameComps.nameSuffix // Jr.
// It can also be configured to...
How do I get an HttpContext object from HttpContextBase in ASP.NET MVC 1?
...however, is to address the question, “How do I get an HttpContext object from HttpContextBase?”, literally. The illustrated technique is useful in those situations where you find yourself sandwiched between components you don't necessarily have the luxury to modify.
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How to stop C# console applications from closing automatically? [duplicate]
... the output before the console window closes. When the application is used from the command line no pause is needed, as the console window does not close after a command has finished.
– Jeppe Stig Nielsen
Aug 5 '14 at 21:36
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JSON.stringify without quotes on properties?
...SON string via native function and reserialize it:
function stringify(obj_from_json) {
if (typeof obj_from_json !== "object" || Array.isArray(obj_from_json)){
// not an object, stringify using native function
return JSON.stringify(obj_from_json);
}
// Implements recursiv...
Performant Entity Serialization: BSON vs MessagePack (vs JSON)
...SON. That means some type information can be lost when you convert objects from BSON to JSON, but of course only when these special types are in the BSON source. It can be a disadvantage to use both JSON and BSON in single service.
MessagePack is designed to be transparently converted from/to JSON....
What is the use of a private static variable in Java?
...f a variable is declared as public static varName; , then I can access it from anywhere as ClassName.varName . I am also aware that static members are shared by all instances of a class and are not reallocated in each instance.
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Using pg_dump to only get insert statements from one table within database
I'm looking for a way to get all rows as INSERT statements from one specific table within a database using pg_dump in PostgreSQL.
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Converting unix timestamp string to readable date
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Use datetime module:
from datetime import datetime
ts = int("1284101485")
# if you encounter a "year is out of range" error the timestamp
# may be in milliseconds, try `ts /= 1000` in that case
print(datetime.utcfromtimestamp(ts).strftime('%Y-%m...
Clear the cache in JavaScript
...ed items and retrieve new copies of the page, css, images, JavaScript, etc from the server. This doesn't clear the whole cache, but has the effect of clearing the cache for the page you are on.
However, your best strategy is to version the path or filename as mentioned in various other answers. I...