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What is this 'Lambda' everyone keeps speaking of?
...nsive operations to get a user. Ajax for example
users[name] = user_from_ajax;
}
return users[name];
};
Later on, we may notice that we have a similar function:
var photos = [];
var getPhoto = function (name) {
if (! photo[name]) {
// expensive operations to get a use...
How can I recall the argument of the previous bash command?
...
You can use $_ or !$ to recall the last argument of the previous command.
Also Alt + . can be used to recall the last argument of any of the previous commands.
s...
How to see the changes between two commits without commits in-between?
...
For checking complete changes:
git diff <commit_Id_1> <commit_Id_2>
For checking only the changed/added/deleted files:
git diff <commit_Id_1> <commit_Id_2> --name-only
NOTE: For checking diff without commit in between, you don't need to put the...
How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]
...at for an overview. You need to read the MS-DOS header, then read the IMAGE_NT_HEADERS structure. This contains the IMAGE_FILE_HEADER structure which contains the info you need in the Machine member which contains one of the following values
IMAGE_FILE_MACHINE_I386 (0x014c)
IMAGE_FILE_MACHINE_IA64...
The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value
...s of your object (this is assuming you're using LINQ to SQL):
var story = _db.ArticleSet.First(a => a.storyId == ArticleToEdit.storyId);
story.headline = ArticleToEdit.headline;
story.story = ArticleToEdit.story;
story.image = ArticleToEdit.image;
story.modifiedDate = DateTime.Now;
_db.SubmitCha...
Extending the User model with custom fields in Django
...o.contrib.auth.models import User
from django.db.models.signals import post_save
class UserProfile(models.Model):
user = models.OneToOneField(User)
#other fields here
def __str__(self):
return "%s's profile" % self.user
def create_user_profile(sender, instance, creat...
registerForRemoteNotificationTypes: is not supported in iOS 8.0 and later
... Xcode 6, then you will need to use conditional compiling as follows:
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000
if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) {
// use registerUserNotificationSettings
} else {
// use registerForRemoteNotificationTyp...
Sorting an IList in C#
...: IComparer<T>, IComparer
{
private readonly Comparison<T> _comparison;
public ComparisonComparer(Comparison<T> comparison)
{
_comparison = comparison;
}
public int Compare(T x, T y)
{
return _comparison(x, y);
}
public int Compare...
Using switch statement with a range of value in each case?
...Certainly a good thing; I would name the enum constants something like FROM_1_TO_5. Usually the ranges have a certain meaning, and in that case the enum constants can be named according to the meaning of the range.
– nmatt
Aug 21 at 15:14
...
Use HTML5 to resize an image before upload
... var canvas = document.createElement('canvas'),
max_size = 544,// TODO : pull max size from a site config
width = image.width,
height = image.height;
if (width > height) {
if (width > max_size) ...