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How to get all properties values of a JavaScript Object (without knowing the keys)?
... for you:
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key)) {
var val = obj[key];
// use val
}
}
The nested if makes sure that you don't enumerate over properties in the prototype chain of the object (which is the behaviour you almost certainly wan...
How do cache lines work?
... a rule of thumb, if the processor can't forecast a memory access (and prefetch it), the retrieval process can take ~90 nanoseconds, or ~250 clock cycles (from the CPU knowing the address to the CPU receiving data).
By contrast, a hit in L1 cache has a load-use latency of 3 or 4 cycles, and a store...
Error renaming a column in MySQL
... you lose all other column definitions such as nullability, default value, etc. (see: stackoverflow.com/questions/8553130/…).
– Dejan
Jul 13 '15 at 10:50
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Ways to save Backbone.js model data?
... update a resource, (e.g. Change the flavor of lemon donut to limon donut, etc.) you use a PUT request. When you want to delete that model from the server all together, you use a DELETE request.
These basics are very important because with your RESTful app, you probably will have a URI designation ...
How to set a Default Route (To an Area) in MVC
...or the simple purpose of switching your view engine (i.e. to Spark, NHaml, etc.). In this case, it's not the View-creation logic we need to override, but the FindPartialView and FindView methods in the VirtualPathProviderViewEngine class.
You can thank your lucky stars that these methods are in fac...
Entity Framework - Include Multiple Levels of Properties
...
@Adeem you need to call Include for each property: Db.States.Include(state => state.Cities.Select(city => city.Customers).Include(state => state.Cities.Select(city => city.Vendors)
– Diego Torres
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How do you overcome the svn 'out of date' error?
...ame, there are no prompts. If the file is different, it prompts for tf, mf etc... chosing mf (mine full) insures nothing is overwritten and I could commit when done.
Jay
CompuMatter
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How do I sort unicode strings alphabetically in Python?
... sorts by byte value by default, which means é comes after z and other equally funny things. What is the best way to sort alphabetically in Python?
...
Regex Match all characters between two strings
... I found it useful to remove the beginning of log lines (timestamp etc). I used new line for the beginning string and "at" for the end string.
– Stan
Jan 18 '17 at 5:19
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How can I get useful error messages in PHP?
...ple syntax error (wrong bracket, missing semicolon), or a failed function call, or something else entirely.
43 Answers
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