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Objective-C ARC: strong vs retain and weak vs assign
..." include an implicit "retain"
Example:
@property (nonatomic, retain) NSString *name;
@synthesize name;
4.assign
assign is the default and simply performs a variable assignment
assign is a property attribute that tells the compiler how to synthesize the property's setter implementation
I wo...
Session variables in ASP.NET MVC
...c sealed class SessionSingleton
{
#region Singleton
private const string SESSION_SINGLETON_NAME = "Singleton_502E69E5-668B-E011-951F-00155DF26207";
private SessionSingleton()
{
}
public static SessionSingleton Current
{
get
{
if ( HttpConte...
Node.js Mongoose.js string to ObjectId function
Is there a function to turn a string into an objectId in node using mongoose? The schema specifies that something is an ObjectId, but when it is saved from a string, mongo tells me it is still just a string. The _id of the object, for instance, is displayed as objectId("blah") .
...
Conditional HTML Attributes using Razor MVC3
... For example:
<button type="button" @(true ? "style=\"border:0px\"" : string.Empty)>
This should evaluate to <button type="button" style="border:0px"> but Razor escapes all output from C# and thus produces:
style=&quot;border:0px&quot;
You will only see this if you view th...
Recommendations of Python REST (web services) framework? [closed]
... expression is written once. Replace your someUsefulThing call with a long string, like paginate(request, Post.objects.filter(deleted=False, owner=request.user).order_by('comment_count')) and look at the code. I hope it will illustrate my point.
– temoto
Jul 13...
Traits in PHP – any real world examples/best practices? [closed]
...it that contains different functions for different sorting types (numeric, string, date, etc). You can then use this trait not only in your product class (as given in the example), but also in other classes that need similar strategies (to apply a numeric sort to some data, etc).
Try it:
<?php
...
Is the list of Python reserved words and builtins available in a library?
...
To verify that a string is a keyword you can use keyword.iskeyword; to get the list of reserved keywords you can use keyword.kwlist:
>>> import keyword
>>> keyword.iskeyword('break')
True
>>> keyword.kwlist
['False...
Django dynamic model fields
... to end up storing thousands of items in one field. It also only supports strings for values.
#app/models.py
from django.contrib.postgres.fields import HStoreField
class Something(models.Model):
name = models.CharField(max_length=32)
data = models.HStoreField(db_index=True)
In Django's s...
Python: Best way to add to sys.path relative to the current running script
...rectory (e.g., setup.py), then os.path.dirname(__file__) will be the empty string. For this and similar concerns raised by John Jiang, ekhumoro's more general-purpose solution is strongly preferable.
– Cecil Curry
Oct 16 '19 at 6:02
...
Difference between Convert.ToString() and .ToString()
What is the difference between Convert.ToString() and .ToString() ?
19 Answers
19
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