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How to free memory in Java?
... they
currently occupy available for quick
reuse. When control returns from the
method call, the Java Virtual Machine
has made a best effort to reclaim
space from all discarded objects.
share
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How to truncate a foreign key constrained table?
...able foreign key before truncate is also a good way, i did it with success from source: stackoverflow.com/questions/8641703/…
– Dung
Jun 4 '16 at 3:32
2
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Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
... the type of E1, except that E1 is evaluated only once.
An example cited from §15.26.2
[...] the following code is correct:
short x = 3;
x += 4.6;
and results in x having the value 7 because it is equivalent to:
short x = 3;
x = (short)(x + 4.6);
In other words, your assumption is ...
Convert string in base64 to image and save on filesystem in Python
...odernizing this example to Python 3, which removed arbitrary codec support from string/bytes .encode() and .decode() functions:
# For both Python 2.7 and Python 3.x
import base64
with open("imageToSave.png", "wb") as fh:
fh.write(base64.decodebytes(img_data))
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Get controller and action name from within controller?
...tic.
// controller constructor
public MyController() {
// grab action from RequestContext
string action = System.Web.HttpContext.Current.Request.RequestContext.RouteData.GetRequiredString("action");
// grab session (another example of using System.Web.HttpContext static reference)
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Deserializing JSON to .NET object using Newtonsoft (or LINQ to JSON maybe?)
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If you just need to get a few items from the JSON object, I would use Json.NET's LINQ to JSON JObject class. For example:
JToken token = JObject.Parse(stringFullOfJson);
int page = (int)token.SelectToken("page");
int totalPages = (int)token.SelectToken("total...
C++ display stack trace on exception
...
the post you link to mostly points to generating a trace from a segfault, but the asker specifically mentions exceptions, which are quite a different beast.
– Shep
Mar 13 '14 at 14:29
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How do I parse a string with a decimal point to a double?
...lso use customized regional settings where I changed the decimal separator from ',' to '.' and list separator from ';' to ','. You know, cause csv... Good luck to us all writing multi-culture apps ;)
– Steven Spark
Jun 22 '18 at 13:15
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How to get a cross-origin resource sharing (CORS) post request working
...ersion on demand. The file conversion is triggered by a AJAX POST request from the page served from the XBMC server.
11 An...
Pandas - How to flatten a hierarchical index in columns
I have a data frame with a hierarchical index in axis 1 (columns) (from a groupby.agg operation):
17 Answers
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