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sql - Difference between LIKE and ~ in Postgres

I've been instructed "not to bother with LIKE" and use ~ instead. What is wrong with LIKE and how is ~ ... context or do people say "use the tilde operator"? Question&Answers:os...

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iphone - UIButton can't be touched while animated with UIView animateWithDuration

I have the following code: [UIView animateWithDuration:0.3 delay:0.0 options:UIViewAnimationCurveEaseOut | ... how would i go about that? Question&Answers:os...

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c# - How to enumerate all windows belonging to a particular process using .NET?

How i can find all the windows created by a particular process using c#? UPDATE i need enumerate all the windows ... PID (process ID) of the an application. Question&Answers:os...

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delphi - Why should I not use "if Assigned()" before accessing objects?

This question is a continuance of a particular comment from people on stackoverflow which I've seen a few different ... nil. So both checks should be necessary. Question&Answers:os...

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java - JComboBox Selection Change Listener?

I'm trying to get an event to fire whenever a choice is made from a JComboBox. The problem I'm having is ... leave the question up since your answer is good. Question&Answers:os...

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c# - Why does casting int to invalid enum value NOT throw exception?

If I have an enum like so: enum Beer { Bud = 10, Stella = 20, Unknown } Why does it not throw an ... ToString()); I find this strange...can anyone clarify? Question&Answers:os...

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visual c++ - MSVC doesn't expand __VA_ARGS__ correctly

Consider this code: #define F(x, ...) X = x and VA_ARGS = __VA_ARGS__ #define G(...) F(__VA_ARGS__) F( ... broken down to multiple ones. Any way around this? Question&Answers:os...

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conditional statements - Why would you use an assignment in a condition?

In many languages assignments are legal in conditions. I never understood the reason behind this. Why would you write: if (var1 = ... = var2; if (var1) { ... } Question&Answers:os...

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subquery in codeigniter active record

SELECT * FROM certs WHERE id NOT IN (SELECT id_cer FROM revokace); How do I write the above select statement in CodeIgniter active record? Question&Answers:os...

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json - XMLHttpRequest cannot load an URL with jQuery

I'm trying to get some json data from a "remote" website. I run my web service on the 99000 port then, I launch ... "}] Do you know why I'm getting this error? Question&Answers:os...

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c# - Notify ObservableCollection when Item changes

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python - Can not click on a Element: ElementClickInterceptedException in Splinter / Selenium

I'm trying to scrape a page, but I sometimes have trouble clicking a link/button. When the web page loads, ... element is present even when it's not active. Question&Answers:os...

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c++ - What do 1.#INF00, -1.#IND00 and -1.#IND mean?

I'm messing around with some C code using floats, and I'm getting 1.#INF00, -1.#IND00 and -1.#IND when ... list all those invalid values and what they mean? Question&Answers:os...

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python - list to dictionary conversion with multiple values per key?

I have a Python list which holds pairs of key/value: l = [[1, 'A'], [1, 'B'], [2, 'C']] I ... ',)} Is there a more elegant, Pythonic solution for this task? Question&Answers:os...

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swift - How do you test functions and closures for equality?

The book says that "functions and closures are reference types". So, how do you find out if the references ... for === that accepts the supplied arguments Question&Answers:os...

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Git 1.6.4 beta on Windows (msysgit) - Unix or DOS line termination

I am installing msysgit 1.6.4 beta on my Win Vista development VPC. An install screen is requesting whether I want ... Git via the shell for my VS 2008 work? Question&Answers:os...

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sql server - How to return multiple values in one column (T-SQL)?

I have a table UserAliases (UserId, Alias) with multiple aliases per user. I need to query it and return all ... . actual T-SQL query would be appreciated :) Question&Answers:os...

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java - Http 415 Unsupported Media type error with JSON

I am calling a REST service with a JSON request and it responds with a HTTP 415 "Unsupported Media Type" error. ... ","objects":"http://www.example.com"} Question&Answers:os...

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Application Crashes With "Internal Error In The .NET Runtime"

We have an application written against .NET 4.0 which over the weekend crashed, putting the following message into ... diagnosing a bug in the .NET Runtime? Question&Answers:os...

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C / C++ MultiDimensional Array Internals

I have a question about how C / C++ internally stores multidimensional arrays declared using the notation foo[m][n] ... , why does the above code work as shown. Question&Answers:os...

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android - Spinner: get state or get notified when opens

Is it possible to know whether a Spinner is open or closed? It would even be better if there was some ... outside of the Dialog, which also closes the spinner Question&Answers:os...

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c++ - What exactly is the "immediate context" mentioned in the C++11 Standard for which SFINAE applies?

Paragraph 14.8.2/8 of the C++11 Standard specifies the conditions under which a substitution failure shall ... function type and its template parameter types? Question&Answers:os...

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objective c - Dot notation vs. message notation for declared properties

We now have the "dot" notation for properties. I've seen various back and forths about the merits of dot ... (the write once read a thousand times paradigm). Question&Answers:os...

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Circular list iterator in Python

I need to iterate over a circular list, possibly many times, each time starting with the last visited item. The use ... there a neat way to do it in Python? Question&Answers:os...

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html - How to make a pure css based dropdown menu?

I am looking horizontal dropdown menu pure css based and browser compatible.... i am looking like mentioned below example Question&Answers:os...

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r - How can I count runs in a sequence?

In R, what would be the most efficient/simplest way to count runs of identical elements in a sequence? For example, how to ... ,0,2,0,0) # should give 3,5,2 Question&Answers:os...

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jquery - How to load an external webpage into a div of a html page

I need to load a responsive website into a div in my HTML page without using an iframe element. I have tried this link; ... + " " + xhr.statusText); } }); Question&Answers:os...

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c# - Getting the HTTP Referrer in ASP.NET

I'm looking for a quick, easy and reliable way of getting the browser's HTTP Referrer in ASP.Net (C#). I ... way of getting the referrer if it is present. Question&Answers:os...

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

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