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Flask-SQLAlchemy import/context issue
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db.app = app (followed by db.init_app(app)) was the missing piece for me. Works perfectly after adding that line (combined with Sean Vieira' answer)
– Dotl
Aug 24 '17 at 8:48
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Using JQuery to check if no radio button in a group has been checked
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Both the answer by Dominic Rodger and Jacobo Hernández work well. I personally try to never use the leading NOT (!) at the beginning of the line. Years later it gets hard to debug when you overlook that and have the logic backwards... is(":...
Input type=password, don't let browser remember the password
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setTimeout(function(){
document.getElementById('passfld').type = 'password';
},10);
}
</script>
#another way
<script type="text/javascript">
function setAutoCompleteOFF(tm){
if(typeof tm =="undefined"){tm=10;}
try{
var inputs...
廉价共享存储解决方案2-drbd+cman+gfs2 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...lic/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
a9:8a:3a:3d:64:eb:0b:de:94:a5:92:e4:ba:5d:f3:de root@gfs_1
The key's rand...
Is R's apply family more than syntactic sugar?
...on when it comes to functional programming with R. This can be overridden by using assign or <<-, but that can be very dangerous. Side effects also make a program harder to understand since a variable's state depends on the history.
Edit:
Just to emphasize this with a trivial example that ...
HTML5: Slider with two inputs possible?
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Some time ago... but I managed to "fake" a double slider by placing two sliders exactly on top of each other. One starting at min-value, the other starting at max-value. I guess that's cheating but... it works for me.
– frequent
Jul 23 '11 at ...
Appropriate datatype for holding percent values?
... decimal is ANSI compliant, so always use that unless told otherwise (e.g. by your company's coding standards).
Example Scenarios
For your case (0.00% to 100.00%) you'd want decimal(5,4).
For the most common case (0% to 100%) you'd want decimal(3,2).
In both of the above, the check constraints w...
Efficiency of Java “Double Brace Initialization”?
... read all those classes when using them, that can lead to some time in the bytecode verfication process and such. Not to mention the increase in the needed disk space in order to store all those class files.
It seems as if there is a bit of overhead when utilizing double-brace initialization, so it...
What is state-of-the-art for text rendering in OpenGL as of version 4.1? [closed]
...t, but in glow", and LERPs between the two. Antialiasing works similarly.
By using an 8-bit signed distance value rather than a single bit, this technique increases the effective resolution of your texture map 16-fold in each dimension (instead of black and white, all possible shades are used, thus...
How to customize an end time for a YouTube video?
... for an embedded YouTube video. I know that I can customize the start time by adding &start=30 , but I haven't seen anything relating to the end time.
...