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Python integer division yields float
... answered Aug 15 '09 at 21:51
Brandon E TaylorBrandon E Taylor
23.1k66 gold badges4343 silver badges6868 bronze badges
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How do you match only valid roman numerals with a regular expression?
...L|L?X{0,3})(IX|IV|V?I{0,3})$
Breaking it down, M{0,4} specifies the thousands section and basically restrains it to between 0 and 4000. It's a relatively simple:
0: <empty> matched by M{0}
1000: M matched by M{1}
2000: MM matched by M{2}
3000: MMM matched by M{3}
4000:...
How to initialize log4j properly?
...ile it used to initialize itself, which loggers / appenders got configured and how etc.
The configuration file can be a java properties file or an xml file. Here is a sample of the properties file format taken from the log4j intro documentation page:
log4j.rootLogger=debug, stdout, R
log4j.appen...
How do I check if an object has a key in JavaScript? [duplicate]
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Try the JavaScript in operator.
if ('key' in myObj)
And the inverse.
if (!('key' in myObj))
Be careful! The in operator matches all object keys, including those in the object's prototype chain.
Use myObj.hasOwnProperty('key') to check an object's own keys and will only ret...
Who wrote this programing saying? “Always code as if the guy who ends up maintaining your code will
I found this at somebody's blog, and it introduces as Rick Osborne's. But I google this, and other people says: Martin Golding's, John Woods' and Damian Conway's... Yes, Damian Conway used this quote in " Perl Best Practices " (2005) but Damian doesn't mention who wrote it.
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What do the icons in Eclipse mean?
I just came to SO looking for this, didn't find it, and found it on my own elsewhere. But I thought it would be good for SO to have the answer for future reference; I wondered about them all the time when I was new to Eclipse (this was before I discovered SO).
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Git: can't undo local changes (error: path … is unmerged)
... to commit (not with the -a arg, the relevant changes were already staged) and then I was able to push/pull like normal.
– Patrick
Jan 7 '11 at 3:41
18
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How to preserve insertion order in HashMap? [duplicate]
...p . When I iterate over the map, the data is returned in (often the same) random order. But the data was inserted in a specific order, and I need to preserve the insertion order. How can I do this?
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Are there any downsides to passing structs by value in C, rather than passing a pointer?
...ot of C programming is for embedded systems, where memory is at a premium, and stack sizes may be measured in KB or even Bytes... If you're passing or returning structs by value, copies of those structs will get placed on the stack, potentially causing the situation that this site is named after...
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How do I use WebRequest to access an SSL encrypted site using https?
...t.com/en-us/library/ds8bxk2a.aspx
For http connections, the WebRequest and WebResponse classes use SSL to communicate with web hosts that support SSL. The decision to use SSL is made by the WebRequest class, based on the URI it is given. If the URI begins with "https:", SSL is used; if the URI b...