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What reason is there to use null instead of undefined in JavaScript?
...mply stuff like if(x) ... . Stop it. !x will evaluate to true for an empty string, 0, null, NaN - ie things you probably don't want. If you want to write javascript that isn't awful, always use triple equals === and never use null (use undefined instead). It'll make your life way easier.
...
How can I clear scrollback buffer in Tmux?
... it only works on local shells, because it sends the tmux clear-history as string to be written to the active pane. I've adapted it to: bind-key E send-keys "C-k" \; send-keys "C-u" \; send-keys "clear" \; send-keys "Enter" \; run-shell "sleep .3s; tmux clear-history"
– Santi ...
Converting strings to floats in a DataFrame
How to covert a DataFrame column containing strings and NaN values to floats. And there is another column whose values are strings and floats; how to convert this entire column to floats.
...
Which encoding opens CSV files correctly with Excel on both Mac and Windows?
...king good with special characters and separated fields. I start my output string with "\ufeff" as a byte order mark (BOM), then using "\t" tabs in place of commas for field separation, and encoding the file with "utf-16LE". Works like a charm, thanks to this page!
– Geek Stoc...
SetUnhandledExceptionFilter and the C/C++ Runtime Library - C/C++ - 清...
...ler);
std::cout << "Normal null pointer crash" << std::endl;
char *p = 0;
*p = 5;
}
The program should then display:
Normal null pointer crash
Gotcha!
The C/C++ Runtime Library
The C/C++ Runtime Library will remove any custom crash handler in certain circumstances, and our...
Why does the is operator return false when given null?
...
I think null is string returning false is very intuitive. Null means nothing, and it is definitely not a string. So it should return false. While it is a choice the language designers made, it is a very intuitive one when you consider the re...
How can I indent multiple lines in Xcode?
...B instead, like eclipse and any derivatives
– Aram Kocharyan
Feb 9 '12 at 6:50
41
Additionally, C...
What is JavaScript garbage collection?
...called a "scavenger". A scavenger
may refer to a number, an object, a
string, whatever. We maintain a list
of scavengers -- variables are moved
on to the scav list when they come
into scope and off the scav list when
they go out of scope.
Every now and then the garbage
collector ru...
How do I reformat HTML code using Sublime Text 2?
...
Ships with Sublime, so no plugin install needed
Cons:
Doesn't delete extra blank lines
Can't handle minified HTML, lines with multiple open tags
Doesn't properly format <script> blocks
Tag
Pros:
Supports ST2/ST3
Removes extra blank lines
No binary dependencies
Cons:
Chokes on PH...
Reliable method to get machine's MAC address in C#
...alStatus == OperationalStatus.Up
select nic.GetPhysicalAddress().ToString()
).FirstOrDefault();
Or:
String firstMacAddress = NetworkInterface
.GetAllNetworkInterfaces()
.Where( nic => nic.OperationalStatus == OperationalStatus.Up && nic.NetworkInterfaceType != Netwo...