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What does “The APR based Apache Tomcat Native library was not found” mean?
... the java.library.path"
The library referred to is bundled into an OS specific dll (tcnative-1.dll) loaded via JNI. It allows tomcat to use OS functionalities not provided in the Java Runtime (such as sendfile, epoll, OpenSSL, system status, etc.). Tomcat will run just fine without it, but for some...
Use didSelectRowAtIndexPath or prepareForSegue method for UITableView?
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If you use prepareForSegue:sender:then you won't have as much to change if you later decide to trigger the segue from some control outside the table view.
The prepareForSegue:sender: message is sent to the current view contr...
How to replace a character by a newline in Vim
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wow----this is amazing. I used to do sed -n l till now. Good to know that the same can be achieved with Ctrl-v in vim.
– arpit
May 15 at 4:35
add a com...
What is a good choice of database for a small .NET application? [closed]
...pport differs across them all. This list is just for curiosity.
There is now also Karvonite, however the code gallery link is broken. When it's live again I'll be looking into this one for WP7 development.
share
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Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?
...API is probably throwing away the alpha channel (i.e. decoding to RGB565). If you have a file path, just use BitmapFactory directly, but tell it to use a format that preserves alpha:
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bi...
Renaming columns in pandas
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RENAME SPECIFIC COLUMNS
Use the df.rename() function and refer the columns to be renamed. Not all the columns have to be renamed:
df = df.rename(columns={'oldName1': 'newName1', 'oldName2': 'newName2'})
# Or rename the existing DataFram...
SQLAlchemy: how to filter date field?
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if you want to get the whole period:
from sqlalchemy import and_, func
query = DBSession.query(User).filter(and_(func.date(User.birthday) >= '1985-01-17'),\
func.date...
Why is argc not a constant?
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(Aside: Interestingly, although getopt's prototype suggests it won't modify argv[] but may modify the strings pointed to, the Linux man page indicates that getopt permutes its arguments, and it appears they know they're being naughty. The man page at the Open Group does not mention this permutat...
ASP.NET MVC 4 Custom Authorize Attribute with Permission Codes (without roles)
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{
var isAuthorized = base.AuthorizeCore(httpContext);
if (!isAuthorized)
{
return false;
}
string privilegeLevels = string.Join("", GetUserRights(httpContext.User.Identity.Name.ToString())); // Call another method to get right...
count(*) vs count(column-name) - which is more correct? [duplicate]
Does it make a difference if you do count(*) vs count(column-name) as in these two examples?
5 Answers
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