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How to get all properties values of a JavaScript Object (without knowing the keys)?
...lues = obj => Object.keys(obj).map(key => obj[key]);
which you can now use like
// ['one', 'two', 'three']
var values = Object.values({ a: 'one', b: 'two', c: 'three' });
If you want to avoid shimming when a native Object.values exists, then you can do:
Object.values = Object.values || (...
How to crop an image in OpenCV using Python
...
Alternatively, if you have defined a crop margin, you can do crop_img = img[margin:-margin, margin:-margin]
– Rufus
Aug 28 '18 at 2:35
...
SQL injection that gets around mysql_real_escape_string()
...5.6 by default: big5, cp932, gb2312, gbk and sjis. We'll select gbk here.
Now, it's very important to note the use of SET NAMES here. This sets the character set ON THE SERVER. If we used the call to the C API function mysql_set_charset(), we'd be fine (on MySQL releases since 2006). But more on wh...
Combining node.js and Python
... communication between node.js and Python server, I would use Unix sockets if both processes run on the same server and TCP/IP sockets otherwise. For marshaling protocol I would take JSON or protocol buffer. If threaded Python shows up to be a bottleneck, consider using Twisted Python, which
provide...
What's the easiest way to escape HTML in Python?
...
> to >
& to &
That is enough for all HTML.
EDIT: If you have non-ascii chars you also want to escape, for inclusion in another encoded document that uses a different encoding, like Craig says, just use:
data.encode('ascii', 'xmlcharrefreplace')
Don't forget to decode dat...
How to track down a “double free or corruption” error
...
If you're using glibc, you can set the MALLOC_CHECK_ environment variable to 2, this will cause glibc to use an error tolerant version of malloc, which will cause your program to abort at the point where the double free is do...
How to grep a text file which contains some binary data?
...binary files are treated differently:
When searching binary data, grep now may treat non-text bytes as line
terminators. This can boost performance significantly.
So what happens now is that with binary data, all non-text bytes
(including newlines) are treated as line terminators. If you wan...
Constructors in JavaScript objects
...) { return name; };
this.set_name = function (value) {
if (typeof value != 'string')
throw 'Name must be a string';
if (value.length < 2 || value.length > 20)
throw 'Name must be 2-20 characters long.';
name = value;
...
How can I extract the folder path from file path in Python?
...> os.path.dirname(os.path.abspath(existGDBPath))
'T:\\Data\\DBDesign'
If you want both the file name and the directory path after being split, you can use the os.path.split function which returns a tuple, as follows.
>>> import os
>>> os.path.split(os.path.abspath(existGDBPat...
How do I use JDK 7 on Mac OSX?
... I will update the answer with the latest information. Please let me know if this is not the right answer. Thanks.
– okysabeni
May 4 '12 at 9:48
...