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What is a message pump?
...el, by far the most common ones (including Office) use "Apartment". Which means that the only safe way to call an interface method is by making the call from the same thread that created the class object. Or to put it another way: by far most COM classes are not thread-safe.
Every COM enabled thr...
XPath to select multiple tags
...wers and nobody has bothered to explain. What does "namespace restrictive" mean? If I use local-name(), does that mean it would match tags with any namespace? If I use self::, what namespace would it have to match? How would I match only OhMy:c?
– meustrus
Jan ...
What's the fastest way to loop through an array in JavaScript?
...
Im guessing @jondavidjohn that what you mean by 'my answer below' is 'my answer above' lol.
– Shanimal
Dec 28 '16 at 0:47
...
Can a Windows batch file determine its own file name?
...that 0 is a special case of parameter numbers inside a batch file, where 0 means this file as given on the command line.
So if the file is myfile.bat, you could call it in several ways as follows, each of which would give you a different output from the %0 or %~0 usage:
myfile
myfile.bat
mydir\m...
Spring get current ApplicationContext
...e current context, rather it creates another instance of it for you. Which means 1) significant chunk of memory and 2) beans are not shared among these two application contexts.
share
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Android: upgrading DB version and adding new table
..., int oldVersion, int newVersion) {
if (oldVersion < 2) {
//means old version is 1
Migration migration = new MigrationV1ToV2();
migration.run(db);
}
if (oldVersion < 3) {
//means old version is 2
}
}
Note: All upgrades (mentioned in onUpgrad...
How to get file creation & modification date/times in Python?
...ust in case anyone misses @Glyph's comment to the question, ctime does not mean creation time on POSIX systems. I wonder how many people have skimmed this post over the past three years and gone on to write buggy code.
– kojiro
Nov 7 '11 at 20:37
...
If table exists drop table then create it, if it does not exist just create it
...result of CREATE ... and do not continue in
case of error, because failure means that other thread didn't finish
the same script: either because it crashed in the middle or just
didn't finish yet -- it's a good idea to inspect things by yourself.
Then, you should check the result of first RENAME ......
What does “mro()” do?
...lt;class 'object'>]
The rule is depth-first, which in this case would mean D, B, A, C.
Python normally uses a depth-first order when searching inheriting classes, but when two classes inherit from the same class, Python removes the first mention of that class from mro.
...
string c_str() vs. data()
...could be composed with elements of any type. In those cases data() is more meaningful. c_str() in my opinion is only really useful when the elements of your string are character based.
Extra: In C++11 onwards, both functions are required to be the same. i.e. data is now required to be null-terminat...