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libpng warning: iCCP: known incorrect sRGB profile
...CCP chunk from the PNG image.
Some applications treat warnings as errors; if you are using such an application you do have to remove the chunk. You can do that with any of a variety of PNG editors such as ImageMagick's
convert in.png out.png
To remove the invalid iCCP chunk from all of the PNG ...
reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
...ram is right because you understand how it works, not right by accident.)
Now suppose you make a variable which is an alias of a volatile field by passing a ref to that field. Inside the called method, the compiler has no reason whatsoever to know that the reference needs to have volatile semantics...
What is a memory fence?
...nly found in device drivers than application code.
The CPU reordering is different from compiler optimisations - although the artefacts can be similar. You need to take separate measures to stop the compiler reordering your instructions if that may cause undesirable behaviour (e.g. use of the volat...
App Inventor 2 图片处理教程 - 缩放、裁剪、存储与转换 · App Inventor 2 中文网
...tPath = join("/sdcard/DCIM/Camera/my_photo_", Clock1.FormatDateTime(Clock1.Now(), "yyyyMMdd_HHmmss"), ".png")
File1.SaveFile(File1.ReadFrom(srcPath), destPath)
}
when File1.AfterFileSaved(fileName) {
Label1.Text = join("✅ 已保存到相册：", fileName)
}
注意：Android 10+的分区...
What generates the “text file busy” message in Unix?
...eck what other processes are using it. You can use kill command to kill it if needed.
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How to structure a express.js application?
...dule.exports = mongoose.model('PhoneNumber', PhoneNumberSchema);
and then if I need to create a phone number, it's as simple as:
var PhoneNumber = require('../models/phoneNumber');
var phoneNumber = new PhoneNumber();
if I need to use the schema, then PhoneNumber.schema
(which assumes that we are ...
How to set target hosts in Fabric file
...
Or if the task is always run on the same role, you can use the @roles() decorator on the task.
– Tom
Aug 14 '12 at 18:19
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Longest line in a file
...
@Thomas. Expressing it as a pipe is more general than specifying a file as an option. In my case, I'll be using output piped from a database query.
– Andrew Prock
Oct 31 '09 at 23:31
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How to initialize a vector in C++ [duplicate]
... give you the beginning and end of an array:
template <typename T, size_t N>
T* begin(T(&arr)[N]) { return &arr[0]; }
template <typename T, size_t N>
T* end(T(&arr)[N]) { return &arr[0]+N; }
And then you can do this without having to repeat the size all over:
int vv[]...
python pandas dataframe to dictionary
...for to_dict. You can use it like this:
df.set_index('id').to_dict()
And if you have only one column, to avoid the column name is also a level in the dict (actually, in this case you use the Series.to_dict()):
df.set_index('id')['value'].to_dict()
...