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Are there legitimate uses for JavaScript's “with” statement?
... to use with instead. The real problem is that even with a with as a let, extra care still has to be taken because of inherited properties of an object on the prototype chain. For example, var toString = function () { return "Hello"; }; with ({"test":1}) { console.log(toString()); };. In the scop...
How to split a string into an array of characters in Python?
I've tried to look around the web for answers to splitting a string into an array of characters but I can't seem to find a simple method
...
How to limit the maximum value of a numeric field in a Django model?
...
Here is the best solution if you want some extra flexibility and don't want to change your model field. Just add this custom validator:
#Imports
from django.core.exceptions import ValidationError
class validate_range_or_null(object):
compare = lambda self,...
Android equivalent to NSNotificationCenter
...context, Intent intent) {
// Get extra data included in the Intent
String message = intent.getStringExtra("message");
Log.d("receiver", "Got message: " + message);
}
};
@Override
protected void onDestroy() {
// Unregister since the activity is about to be closed.
// This is somewh...
Prevent contenteditable adding on ENTER - Chrome
... Doesn't work on Chrome. First time when you press enter at the end of the string, it adds a space. The second time it works though.
– user670839
Apr 15 at 19:24
add a comment...
How to pass arguments to a Button command in Tkinter?
...ss', command=fce)
See: http://infohost.nmt.edu/tcc/help/pubs/tkinter/web/extra-args.html
For more buttons you can create a function which returns a function:
def fce(myX, myY):
def wrapper(x=myX, y=myY):
pass
pass
pass
return x+y
return wrapper
button1 = ...
How do I create a parameterized SQL query? Why Should I?
...o parameters with Sql Server:
Public Function GetBarFooByBaz(ByVal Baz As String) As String
Dim sql As String = "SELECT foo FROM bar WHERE baz= @Baz"
Using cn As New SqlConnection("Your connection string here"), _
cmd As New SqlCommand(sql, cn)
cmd.Parameters.Add("@Baz", S...
Android: Background Image Size (in Pixel) which Support All Devices
... ldpi (low) ~120dpi
mdpi (medium) ~160dpi
hdpi (high) ~240dpi
xhdpi (extra-high) ~320dpi
xxhdpi (extra-extra-high) ~480dpi
xxxhdpi (extra-extra-extra-high) ~640dpi
This corresponds to an xxhdpi screen. From here I could scale these 1080 x 1920 down by the (3:4:6:8:12) ratios above.
I ...
JPG vs. JPEG image formats
...ut it is inaccurate. • The JPEG group were mostly Unix shops, thus the 4-char .jpeg extension, not because of Mac. • It was the DOS 8.3 limit that caused the shortening to .jpg — windows was just a shell on top of DOS. • The commonly accepted .jpg form is because of programs that had to cope...
How to remove from a map while iterating it?
...r this pattern which is slightly clearer and simpler, at the expense of an extra variable:
for (auto it = m.cbegin(), next_it = it; it != m.cend(); it = next_it)
{
++next_it;
if (must_delete)
{
m.erase(it);
}
}
Advantages of this approach:
the for loop incrementor makes sense as an ...