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MySQL Error 1215: Cannot add foreign key constraint
... @www.jensolsson.se You are correct, if the PK includes one or more string columns then they must use the same character set and collation. In this specific case the PK was an INT so the character set of the table and/or columns was not relevant.
– Ike Walker
...
How to use regex in String.contains() method in Java
I want to check if a String contains the words "stores", "store", and "product" in that order, no matter what is in between them.
...
How can I get the named parameters from a URL using Flask?
...
Use request.args to get parsed contents of query string:
from flask import request
@app.route(...)
def login():
username = request.args.get('username')
password = request.args.get('password')
...
Zooming MKMapView to fit annotation pins?
...
Very nice solution!!! Here's an extra little touch to add some padding: double inset = -zoomRect.size.width * 0.1; [self.mapView setVisibleMapRect:MKMapRectInset(zoomRect, inset, inset) animated:YES];
– Craig B
Aug 5 '...
Programmatically obtain the phone number of the Android phone
...(TelephonyManager)mAppContext.getSystemService(Context.TELEPHONY_SERVICE);
String mPhoneNumber = tMgr.getLine1Number();
Required Permission:
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
Caveats:
According to the highly upvoted comments, there are a few caveats t...
Input text dialog Android
... like a text Dialog to appear and I would like to store the result in a String . I'd like the text Dialog to overlay the current screen. How can I do this?
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Python ElementTree module: How to ignore the namespace of XML files to locate matching element when
... you can handle multiple namespaces and namespace aliases:
from io import StringIO # for Python 2 import from StringIO instead
import xml.etree.ElementTree as ET
# instead of ET.fromstring(xml)
it = ET.iterparse(StringIO(xml))
for _, el in it:
prefix, has_namespace, postfix = el.tag.partition...
How to simplify a null-safe compareTo() implementation?
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Using Java 8:
private static Comparator<String> nullSafeStringComparator = Comparator
.nullsFirst(String::compareToIgnoreCase);
private static Comparator<Metadata> metadataComparator = Comparator
.comparing(Metadata::getName, nullSafeStri...
Can CSS force a line break after each word in an element?
...es a line-break wherever a line-break appears in the code, but ignores the extra whitespace (tabs and spaces etc.).
First, write your words on separate lines in your code:
<div>Short
Word</div>
Then apply the style to the element containing the words.
div { white-space: pre-line; }...
How to compare dates in datetime fields in Postgresql?
...er the first form because you want to avoid date manipulation on the input string, correct? you don't need to be afraid:
SELECT *
FROM table
WHERE update_date >= '2013-05-03'::date
AND update_date < ('2013-05-03'::date + '1 day'::interval);
...