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When are C++ macros beneficial? [closed]
The C preprocessor is justifiably feared and shunned by the C++ community. In-lined functions, consts and templates are usually a safer and superior alternative to a #define .
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What does .SD stand for in data.table in R
...ks useful but I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it?
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Why is a C++ Vector called a Vector?
... vartec, can't a Euclidean vector be represented as a coordinate vector and vice versa? They're just different representations of the same thing (a tuple) in Euclidian space versus the more general vector space.
– Calvin
Apr 17 '09 at 1:13
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How to remove “Server name” items from history of SQL Server Management Studio
...n in the Connect to Server dialog. This is documented in this Connect item and this blog post.
Note that if you have multiple entries for a single server name (e.g. one with Windows and one with SQL Auth), you won't be able to tell which one you're deleting.
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Convert NaN to 0 in javascript
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Thanks mate, have selected and modified a bit this for myself a = a*1 || 0
– Somebody
Dec 7 '11 at 17:22
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System.Data.SQLite Close() not releasing database file
...d the same problem a while ago while writing a DB abstraction layer for C# and I never actually got around to finding out what the issue was. I just ended up throwing an exception when you attempted to delete a SQLite DB using my library.
Anyway, this afternoon I was looking through it all again an...
Determine whether an array contains a value [duplicate]
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fixed the comparison and added the missing return -1; please note that according to the ES5 spec, this method will behave differently from the native one in case ofsigned zeroes and NaNs (see 15.4.4.14 and 9.12 vs. 11.9.6)
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Spring Boot - Cannot determine embedded database driver class for database type NONE
... properties that you can set.
You'll need to provide the appropriate url and driver class name:
spring.datasource.url = …
spring.datasource.driver-class-name = …
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How to perform mouseover function in Selenium WebDriver using Java?
...rectly.
So, as the manual way I am trying to hover over the drop down menu and then will click the new options.
8 Answers
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How to install PyQt4 on Windows using pip?
... sure you grab the correct Windows wheel file (python version, 32/64 bit), and then use pip to install it - e.g:
C:\path\where\wheel\is\> pip install PyQt4-4.11.4-cp35-none-win_amd64.whl
Should properly install if you are running an x64 build of Python 3.5.
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