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ObjectiveC Parse Integer from String
...] may not behave exactly how you expect. From the docs: This property is 0 if the string doesn’t begin with a valid decimal text representation of a number. For example, [@" 2 asdghjk" intValue] will return 2.
– zekel
Dec 2 '15 at 15:37
...
关于php的socket初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ocketServer($port)
{
global $errno, $errstr;
if ($port < 1024) {
die("Port must be a number which bigger than 1024/n");
}
$socket = stream_socket_server("tcp://0.0.0.0:{$port}", $errno, $errstr);
if (!$socket) ...
efficient circular buffer?
...s defined. O(n) is understandable when the deque can grow to infinity, but if maxlen is given, indexing an element should be constant time.
– lvella
Nov 13 '15 at 21:57
1
...
Outputting data from unit test in python
If I'm writing unit tests in python (using the unittest module), is it possible to output data from a failed test, so I can examine it to help deduce what caused the error? I am aware of the ability to create a customized message, which can carry some information, but sometimes you might deal with m...
What does “:=” do?
...mpanying explanation. It's not exactly possible to google its use without knowing the proper name for it.
10 Answers
...
Get exception description and stack trace which caused an exception, all as a string
...
See the traceback module, specifically the format_exc() function. Here.
import traceback
try:
raise ValueError
except ValueError:
tb = traceback.format_exc()
else:
tb = "No error"
finally:
print tb
...
What is 'Pattern Matching' in functional languages?
...a functional language, the datatypes that you define are usually what are known as discriminated unions or algebraic data types. For instance, what's a (linked) list? A linked list List of things of some type a is either the empty list Nil or some element of type a Consed onto a List a (a list of...
Dynamically load a JavaScript file
...rary.js", type: "text/javascript"});
The problem here is that we do not know when the external script file is fully loaded.
We often want our dependant code on the very next line and like to write something like:
if (iNeedSomeMore) {
Script.load("myBigCodeLibrary.js"); // includes code for ...
warning about too many open figures
...her plots.
plt.close() closes a window, which will be the current window, if not specified otherwise. plt.close('all') will close all open figures.
The reason that del fig does not work is that the pyplot state-machine keeps a reference to the figure around (as it must if it is going to know what ...
How to construct a REST API that takes an array of id's for the resources
...resource.
201 Created
Location: "http://example.com/api/batchtask/1254"
Now client can fetch batch response or task progress by polling
GET http://example.com/api/batchtask/1254
This is how others attempted to solve this issue:
Google Drive
Facebook
Microsoft
Subbu Allamaraju
...