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How to check if object has any properties in JavaScript?
...ave any way to create non-enumerable properties.
However this has changed now with ECMAScript 5th Edition, and we are able to create non-enumerable, non-writable or non-deletable properties, so the above method can fail, e.g.:
var obj = {};
Object.defineProperty(obj, 'test', { value: 'testVal',
...
How to import a .cer certificate into a java keystore?
...t the private key is being generated by a plugin for IE. Only solution for now is to import the certificate in IE and export a .pfx file.
– Jan-Pieter
Nov 17 '11 at 13:45
5
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HTML - how can I show tooltip ONLY when ellipsis is activated
...low {
text-overflow: ellipsis;
overflow : hidden;
white-space: nowrap;
}
.might-overflow:hover {
text-overflow: clip;
white-space: normal;
word-break: break-all;
}
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in Ipython notebook / Jupyter, Pandas is not displaying the graph I try to plot
... The recommended way to enable inline plotting in the IPython Notebook is now to run:
%matplotlib inline
import matplotlib.pyplot as plt
See this post from the ipython-dev mailing list for more details.
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Creating functions in a loop
...
how do you know how to fix these things?
– alwbtc
Aug 18 '18 at 15:49
3
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Using port number in Windows host file
... @Mat That would be nice, right? I just want others who see this to know to scroll down a little bit and give it a shot. I ended up here when trying to figure out how to map .test domains to my docker images locally on Windows 10, and the netsh answer worked like a charm!
...
Best practices for large solutions in Visual Studio (2008) [closed]
... me automate my TFS builds and the local dev builds very extensively. I'm now working on Incremental builds, and the book goes into the subject very deep. Worth the price. Thanks Sayed. Keep up the great work.
– irperez
Jun 8 '11 at 19:19
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Why is using “for…in” for array iteration a bad idea?
...mewhere deep in your JavaScript library...
Array.prototype.foo = 1;
// Now you have no idea what the below code will do.
var a = [1, 2, 3, 4, 5];
for (var x in a){
// Now foo is a part of EVERY array and
// will show up here as a value of 'x'.
console.log(x);
}
/* Will disp...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
... itself manages the scheduling and context switches, this makes sense. But now I have a rough imagination about what the mutex lock/unlock will do internally.
– Albert
Sep 6 '10 at 21:55
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How to change MySQL data directory?
...r reload
Restart MySQL with the command:
sudo /etc/init.d/mysql restart
Now login to MySQL and you can access the same databases you had before.
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