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sql - Grant SELECT permission on a view, but not on underlying objects

I often read that one purpose of a VIEW is security: to allow some users access to the underlying table, ... expose the underlying objects too? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How do I reliably get an image dimensions in .NET without loading the image?

I know how to get the size (x,y) of an image Image.FromFile("cat.jpg").Size BUT that requires loading the ... ' to clarify which size i wanted. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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how to get keys which does not match a particular pattern in redis?

In Redis, keys user* will print all keys starting with user. For example: keys user* 1) "user2" 2) "user1" ... be printed. How could I do that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - IllegalStateException with Hibernate 4 and ManyToOne cascading

I've got those two classes MyItem Object: @Entity public class MyItem implements Serializable { @Id private Integer id; ... am I doing wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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php - mysql_insert_id alternative for postgresql

is there an alternative for mysql_insert_id() php function for PostgreSQL? Most of the frameworks are solving the ... a serial column.... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - JSON.stringify converting Infinity to null

I have JavaScript Object say: var a = {b: Infinity, c: 10}; When I do var b = JSON.stringify(a); it ... to null. How do I solve this problem. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Error creating R data.table with date-time POSIXlt

Problem creating data.table with date-time column: > mdt <- data.table(id=1:3, d=strptime(c("06:02:36", " ... I do seems to be working though. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to customize JSF validation error message

How can I customize the validation message that appears when validation fails? Here is the code I have: < ... is not particularly user-friendly. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Inline assembly that clobbers the red zone

I'm writing a cryptography program, and the core (a wide multiply routine) is written in x86-64 assembly, both ... it won't put anything there. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Python: Name resolution; order of function def's

I have a very simple example: #!/usr/bin/env python #a() # 1: NameError: name 'a' is not defined #b() ... not yet defined in the same module. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - jQuery Deferred's, $.when() and the fail() callback arguments

I'm getting an unexpected result when using $.when() when one of the deferred operations does not succeed. ... the callback is not respected? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Pandas GroupBy and select rows with the minimum value in a specific column

I am grouping my dataset by column A and then would like to take the minimum value in column B and the ... . Thank you for your help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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serialization - How to serialize Dictionary<string, string> through WCF?

I have a data contract with a data member typed as Dictionary<string, string>. The generated web service ... Has anyone seen this before? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Keytool alias does not exist

I am trying to get my debug.keystore md5 key so I can get the API key for Google Maps. I run the command: ... not exist What am I doing wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How does the linker handle identical template instantiations across translation units?

Suppose I have two translation-units: foo.cpp void foo() { auto v = std::vector<int>(); } bar.cpp ... Does the linker remove them as duplicates? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Numpy difference between neighboring elements

I have algorithm of calculation of the difference between neighboring elements in pure python: a = range(1000000) ... this functions with Numpy? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Does Java have lazy evaluation?

I know that Java has smart/lazy evaluation in this case: public boolean isTrue() { boolean a = false; boolean ... if isBTrue() returns true? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Finding out if a list of Objects contains something with a specified field value?

I have a list of DTO received from a DB, and they have an ID. I want to ensure that my list contains an object with ... -> dto.getId() == id); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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database - How to make a UUID in DynamoDB?

In my db scheme, I need a autoincrement primary key. How I can realize this feature? PS For access to DynamoDB, ... dynode, module for Node.js. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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batch file - How to set a timeout for a process under Windows 7?

I would like to start a program with a windows batch file. But the program should stop after a certain ... Windows 7, 64 Bit, Professional See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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PHP: Date larger than current date

I have this code: $curdate = '22-02-2011'; $mydate = '10-10-2011'; if($curdate > $mydate) { echo '<span ... string. How can I fix this? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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995 views

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python - Setting Different error bar colors in bar plot in matplotlib

Following Setting Different Bar color in matplotlib Python I would like to change the error bar colors. I have ... a general solution at all. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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658 views

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wpf - Difference between {Binding PropertyName} and {Binding Path=PropertyName}

I've seen both styles used in the same project, and I wonder if there's any semantic difference between them, ... over the other and why. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - How to make clickable anchor in contentEditable div?

I have following code: <div contentEditable="true"> Blah blah <a href="http://google.com">Google</a> ... without moving anchor outside that div? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32'

I am building My first MVC application, I have a table in database containing 3 columns: Id → primary key ... RedirectToAction("Index"); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Stripe Currency - Are all amounts in cents / 100ths, or does it depend on currency?

I am currently writing the code to migrate to Stripe from a different payment processor. I know that when the ... Should I multiply by 10? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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592 views

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Update a value in MongoDB based on its current value

I want to do something like this, but the this keyword doesn't seem to be set inside the update statement. ... to use eval to accomplish this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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585 views

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c# - Set BindingContext to ViewModel in XAML on Xamarin.Forms

I want to develop a simple project with Xamarin.Form and MVVM. In my solution (named XamarinPOC) i have (in ... error. Where am I wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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