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Unique Constraint in Entity Framework Code First
...lf and leave the database out of it. This is a more portable solution and forces you to be clear about your business rules in your code, but leaves your database open to invalid data getting back-doored.
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Downloading a picture via urllib and python
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It seems to be cutting off the file extension for me when passed as an argument (the extension is present in the original URL). Any idea why?
– JeffThompson
Nov 1 '14 at 23:39
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Max size of an iOS application
... is the maximum size your iOS app can be.
As of January 26, 2017
App Size for iOS (& tvOS) only
Your app’s total uncompressed size must be less than 4GB. Each Mach-O executable file (for example, app_name.app/app_name) must not exceed these limits:
For apps whose MinimumOSVersion is less tha...
How To Check If A Key in **kwargs Exists?
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Thanks for the extra explanation! Always good for python newcomers to get some background info and further examples of what is possible and what isn't. In that spirit: I think, kwargs.get("errormessage", 17) might return its value o...
UITableView - change section header color
...tarted:
Objective-C:
- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 30)] autorelease];
if (section == integerRepresentingYourSectionOfInterest)
[...
How to implement Enums in Ruby?
What's the best way to implement the enum idiom in Ruby? I'm looking for something which I can use (almost) like the Java/C# enums.
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What is the difference between native code, machine code and assembly code?
...derstands and executes directly. All other code must be translated or transformed into machine code before your machine can execute it.
Native code: This term is sometimes used in places where machine code (see above) is meant. However, it is also sometimes used to mean unmanaged code (see below).
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Align image in center and middle within div
...s.com/cssref/pr_class_display.asp. Why do we need to use block? I worked for me, but not sure why block will center the img and inline will not.
– user3731622
Jan 11 '16 at 20:07
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Nested Models in Backbone.js, how to approach
...code IMO, and feels more of a hack than a solution.
Here's what I suggest for your example:
First define your Layout Model like so.
var layoutModel = Backbone.Model.extend({});
Then here's your image Model:
var imageModel = Backbone.Model.extend({
model: {
layout: layoutModel,
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Random alpha-numeric string in JavaScript? [duplicate]
...ike this:
function randomString(length, chars) {
var result = '';
for (var i = length; i > 0; --i) result += chars[Math.floor(Math.random() * chars.length)];
return result;
}
var rString = randomString(32, '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
Here's a ...