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“Templates can be used only with field access, property access, single-dimension array index, or sin
... this:
class TrainerViewModel
{
private Trainer _trainer;
public string ShortDescription
{
get
{
return _trainer.Description.ToString().Substring(0, 100);
}
}
public TrainerViewModel(Trainer trainer)
{
_trainer = trainer;
}
}...
Rails migrations: Undo default setting for a column
...ip DEFAULT at schema level:
def self.up
change_column :table, :column, :string, :null => false, :default => ""
change_column_default(:table, :column, nil)
end
share
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improve this answer...
When - and why - should you store data in the Windows Registry?
... intuitive to humans), require very specific open/close "tags", connection strings cannot be set at run-time, setup projects cannot write settings (as easily as registry), cannot easily determine user.config file and user settings are blown with each new revision installed.
Solution: Use the ITEM me...
Python regex find all overlapping matches?
...ou're interested in, but the actual match is technically the zero-width substring before the lookahead, so the matches are technically non-overlapping:
import re
s = "123456789123456789"
matches = re.finditer(r'(?=(\d{10}))',s)
results = [int(match.group(1)) for match in matches]
# results:
# [12...
How to implement a custom AlertDialog View
...ntent"
android:layout_height="wrap_content"
android:text="@string/show_password"
android:id="@+id/show_password_checkbox"
android:layout_gravity="left|center_vertical"
android:checked="false"/>
</LinearLayout>
...
Serializing object that contains cyclic object value
...
Use the second parameter of stringify, the replacer function, to exclude already serialized objects:
var seen = [];
JSON.stringify(obj, function(key, val) {
if (val != null && typeof val == "object") {
if (seen.indexOf(val) >= 0)...
Python non-greedy regexes
... is matched against '<H1>title</H1>', it will match the entire string, and not just '<H1>'. Adding '?' after the qualifier makes it perform the match in non-greedy or minimal fashion; as few characters as possible will be matched. Using .*? in the previous expression will match onl...
How do I copy an entire directory of files into an existing directory using Python?
...vantage. distutils.errors.DistutilsInternalError: mkpath: 'name' must be a string, i.e. it does not accept PosixPath. Need to str(PosixPath). Wish list for improvement. Other than this matter, I prefer this answer.
– Sun Bear
Aug 27 '19 at 11:59
...
Activity restart on rotation Android
... android:configChanges="orientation|keyboardHidden"
android:label="@string/app_name">
or for Android 3.2 (API level 13) and newer:
<activity android:name=".MyActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:label="@string/app_name">
The...
Load “Vanilla” Javascript Libraries into Node.js
...opied to './libs/apprise.js'. Then where it starts with
function apprise(string, args, callback){
I assigned the function to module.exports = thus:
module.exports = function(string, args, callback){
Thus I'm able to import the library into my code like this:
window.apprise = require('./libs/...