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What does the [Flags] Enum Attribute mean in C#?
...the runtime performance of this, but all the same, I do think its nice to know that this isn't going to be inserting bitshifts anywhere you use the enum. More of a 'that's neat' thing rather than anything related to performance
– Orion Edwards
Feb 15 '13 at 19:...
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
...
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...
Why do we need to install gulp globally and locally?
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I know that it's best to use local installs, but there might be cases where you just can't install it or just don't want to (imagine that your dedicated CI server has gulp globally installed and you are reinstalling it on every...
SQLAlchemy: how to filter date field?
...
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...
Reshaping data.frame from wide to long format
...
,then that's good for me, don't know id.vars and the measure.vars can be specified in the first alternative,sorry for the mess, its my fault.
– Jason Goal
Oct 20 '17 at 5:34
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How do I create an immutable Class?
...hould be supplied in the constructor
all properties should be getters only
if a collection (or Array) is passed into the constructor, it should be copied to keep the caller from modifying it later
if you're going to return your collection, either return a copy or a read-only version (for example, us...
Parse email content from quoted reply
.... I'll break it up into those two categories:
When you have the thread:
If you have the entire series of emails, you can achieve a very high level of assurance that what you are removing is actually quoted text. There are two ways to do this. One, you could use the message's Message-ID, In-Repl...
Unicode与UTF-8互转(C语言实现) - C/C++ - 清泛网 - 专注C/C++及内核技术
...
{
assert(pOutput != NULL);
assert(outSize >= 6);
if ( unic <= 0x0000007F )
{
// * U-00000000 - U-0000007F: 0xxxxxxx
*pOutput = (unic & 0x7F);
return 1;
}
else if ( unic >= 0x00000080 && unic <= 0x000007FF )
{...
var.replace is not a function
...
Well, str.toString() is only the solution if you are passing a correct value that can successfully be converted to a string; in my case I was passing the wrong thing altogether. :)
– Brett
Mar 6 '18 at 18:21
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