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java SSL and cert keystore
...
anyone knows how to reference this on a windows box? System.setProperty("javax.net.ssl.trustStore", "C:\\Program Files (x86)\\Java\\jdk1.7.0_21\\jre\\lib\\security\\cacerts"); isn't working for me :(
– sim...
How to format strings in Java
...varargs and autoboxing improvements in Java 1.5 and turns the above into a one-liner:
MessageFormat.format("String is \"{1}\", number is {0}.", 42, "foobar");
MessageFormat is a little bit nicer for doing i18nized plurals with the choice modifier. To specify a message that correctly uses the sin...
Checking if a string can be converted to float in Python
...ular expression:
import re
if re.match(r'^-?\d+(?:\.\d+)?$', element) is None:
print "Not float"
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Async/Await vs Threads
...hing taking time, most typically an I/O request. Which traditionally was done with a callback when the I/O request was complete. Writing code that relies on these callbacks is quite difficult, await greatly simplifies it.
capable of doing what ever a Thread can do asynchronously ?
Roughly. ...
Convert floating point number to a certain precision, and then copy to string
...3 (e.g. 2.6 [see comments] or 2.7), there are two ways to do so.
# Option one
older_method_string = "%.9f" % numvar
# Option two
newer_method_string = "{:.9f}".format(numvar)
But note that for Python versions above 3 (e.g. 3.2 or 3.3), option two is preferred.
For more information on option two...
What are attributes in .NET?
...appear in the UI. I could then append it to a class and write some GUI components that extract the attributes and order the UI elements appropriately.
public class DisplayWrapper
{
private UnderlyingClass underlyingObject;
public DisplayWrapper(UnderlyingClass u)
{
underlyingOb...
Extract elements of list at odd positions
... end.
We also provided third argument (step) which is 2. Which means that one element will be selected, the next will be skipped, and so on...
So, to sum up, in this case [1::2] means:
take the second element (which, by the way, is an odd element, if you judge from the index),
skip one element (...
C++ “virtual” keyword for functions in derived classes. Is it necessary?
...The 'virtualness' of a function is propagated implicitly, however at least one compiler I use will generate a warning if the virtual keyword is not used explicitly, so you may want to use it if only to keep the compiler quiet.
From a purely stylistic point-of-view, including the virtual keyword cle...
Multiline syntax for piping a heredoc; is this portable?
...; characters in between.
Then the next here-document starts, if there is one.
And includes this example of multiple "here-documents" in the same line:
cat <<eof1; cat <<eof2
Hi,
eof1
Helene.
eof2
So there is no problem doing redirections or pipes. Your example is similar to somet...
Replace console output in Python
I'm wondering how I could create one of those nifty console counters in Python as in certain C/C++-programs.
10 Answers
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