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JavaScript open in a new window, not tab
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464
Give the window a 'specs' parameter with width/height. See here for all the possible options....
Best way to give a variable a default value (simulate Perl ||, ||= )
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answered Apr 22 '16 at 14:48
jpschroederjpschroeder
4,73722 gold badges2626 silver badges3232 bronze badges
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How should I validate an e-mail address?
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48
Don't use a reg-ex.
Apparently the following is a reg-ex that correctly validates most e-mai...
Can't access object property, even though it shows up in a console log
...ne explain this? I can get access to every other property except field_id_4 as well.
29 Answers
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List of special characters for SQL LIKE clause
...ns => [0-9] Instead you need to specify each character like this : [0123456789]
– Çağdaş Tekin
Apr 3 '09 at 5:13
3
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Make sure only a single instance of a program is running
...ollowing code should do the job, it is cross-platform and runs on Python 2.4-3.2. I tested it on Windows, OS X and Linux.
from tendo import singleton
me = singleton.SingleInstance() # will sys.exit(-1) if other instance is running
The latest code version is available singleton.py. Please file bug...
Docker: adding a file from a parent directory
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answered Dec 15 '15 at 21:54
BoedyBoedy
3,21811 gold badge1717 silver badges2323 bronze badges
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Can Flask have optional URL parameters?
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Another way is to write
@user.route('/<user_id>', defaults={'username': None})
@user.route('/<user_id>/<username>')
def show(user_id, username):
pass
But I guess that you want to write a single route and mark username as optional? If that's the c...
NoClassDefFoundError: android.support.v7.internal.view.menu.MenuBuilder
...e with the Android appcompat v7 library on Samsung devices running Android 4.2. I keep getting crashes with the following stack trace in my Developer Console:
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HTML input - name vs. id [duplicate]
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In HTML4.01:
Name Attribute
Valid only on <a>, <form>, <iframe>, <img>, <map>, <input>, <select>, <textarea>
Name does not have to be unique, and can be used to group elements toget...