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Flask-SQLalchemy update a row's information
...itself. Then, db.session.commit().
For example:
admin = User.query.filter_by(username='admin').first()
admin.email = 'my_new_email@example.com'
db.session.commit()
user = User.query.get(5)
user.name = 'New Name'
db.session.commit()
Flask-SQLAlchemy is based on SQLAlchemy, so be sure to check ou...
Bidirectional 1 to 1 Dictionary in C#
...gt;, IDictionary
{
private readonly IDictionary<TFirst, TSecond> _firstToSecond = new Dictionary<TFirst, TSecond>();
[NonSerialized]
private readonly IDictionary<TSecond, TFirst> _secondToFirst = new Dictionary<TSecond, TFirst>();
[NonSerialized]
private r...
How to read a (static) file from inside a Python package?
...he other answers]
import os, mypackage
template = os.path.join(mypackage.__path__[0], 'templates', 'temp_file')
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GraphViz - How to connect subgraphs?
...luster, that can be linked to even if the cluster is empty otherwise. DUMMY_0 [shape=point style=invis]
– DevSolar
Jun 25 '12 at 7:36
2
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Why does Razor _layout.cshtml have a leading underscore in file name?
...ving standard files never shared is essential as with current *.config, APP_Code and APP_Data directories. But this logic should sit in a config file somewhere (machine config as default) so it can be overridden. Also these default names of common pages should be configurable (Layout/Error/etc...).
...
What's the cleanest way of applying map() to a dictionary in Swift?
...
Swift 4+
Good news! Swift 4 includes a mapValues(_:) method which constructs a copy of a dictionary with the same keys, but different values. It also includes a filter(_:) overload which returns a Dictionary, and init(uniqueKeysWithValues:) and init(_:uniquingKeysWith:) ini...
Structure padding and packing
...It inserts the following "gaps" into your first structure:
struct mystruct_A {
char a;
char gap_0[3]; /* inserted by compiler: for alignment of b */
int b;
char c;
char gap_1[3]; /* -"-: for alignment of the whole struct in an array */
} x;
Packing, on the other hand prevents ...
How to find list intersection?
...
Make a set out of the larger one:
_auxset = set(a)
Then,
c = [x for x in b if x in _auxset]
will do what you want (preserving b's ordering, not a's -- can't necessarily preserve both) and do it fast. (Using if x in a as the condition in the list compreh...
How to split a string literal across multiple lines in C / Objective-C?
...ll lines in C can be split into multiple lines using \.
Plain C:
char *my_string = "Line 1 \
Line 2";
Objective-C:
NSString *my_string = @"Line1 \
Line2";
Better approach
There's a better approach that works just for strings.
Plain C:
char *my_str...
Google Chrome Extensions - Can't load local images with CSS
...
Your image URL should look like chrome-extension://<EXTENSION_ID>/image.jpg
You would be better off replacing css through javascript. From docs:
//Code for displaying <extensionDir>/images/myimage.png:
var imgURL = chrome.extension.getURL("images/myimage.png");
document.getE...