大约有 30,000 项符合查询结果（耗时：0.0471秒） [XML]
Signed versus Unsigned Integers
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He only asked about signed and unsigned. Don't know why people are adding extra stuff in this. Let me tell you the answer.
Unsigned: It consists of only non-negative values i.e 0 to 255.
Signed: It consist of both negative and positive values but in different formats like
0 to +127
-1 to -128
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Pandas read_csv low_memory and dtype options
...s cannot know it is only numbers, it will probably keep it as the original strings until it has read the whole file.
Specifying dtypes (should always be done)
adding
dtype={'user_id': int}
to the pd.read_csv() call will make pandas know when it starts reading the file, that this is only integers.
A...
linq query to return distinct field values from a list of objects
...nd GetHashCode methods.
Product class:
public class Product
{
public string ProductName { get; set; }
public int Id { get; set; }
public override bool Equals(object obj)
{
if (!(obj is Product))
{
return false;
}
var other = (Product)o...
How can I convert an image into Base64 string using JavaScript?
I need to convert my image to a Base64 string so that I can send my image to a server.
13 Answers
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Tools for JPEG optimization? [closed]
...ly everything, the only drawback is it uses more CPU to decode (not enough extra to matter).
– Ariel
Jul 29 '12 at 6:07
1
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How to check if a number is between two values?
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I prefer to put the variable on the inside to give an extra hint that the code is validating my variable is between a range values
if (500 < size && size < 600) { doStuff(); }
share
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Call UrlHelper in models in ASP.NET MVC
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public class MyModel
{
public int ID { get; private set; }
public string Link
{
get
{
UrlHelper url = new UrlHelper(HttpContext.Current.Request.RequestContext);
return url.Action("ViewAction", "MyModelController", new { id = this.ID });
}
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How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”
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A little extra explanation can be found here : blog.effectivemessaging.com/2015_09_01_archive.html
– granadaCoder
Oct 21 '16 at 13:18
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Show Image View from file path?
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Almost: ´decodeFile´ takes a String and not a ´java.io.File´.
– Martin
Apr 29 '11 at 11:51
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How to determine SSL cert expiration date from a PEM encoded certificate?
... the -noout option to see a helpful message using a single command without extra logic. E.g., openssl x509 -checkend 0 -in file.pem will give the output "Certificate will expire" or "Certificate will not expire" indicating whether the certificate will expire in zero seconds.
–...