大约有 7,549 项符合查询结果(耗时:0.0432秒) [XML]
String.IsNullOrWhiteSpace in LINQ Expression
...nt importance to employ 'string.Empty' over "" (aka the empty string). The former works the latter doesn't (at least as far as Oracle's EF driver is concerned). Aka if you use: b.Diameter.Trim() == "" <-- this won't work as intended (crazy I know ...)
– XDS
...
Can you get DB username, pw, database name in Rails?
...hin rails you can create a configuration object and obtain the necessary information from it:
config = Rails.configuration.database_configuration
host = config[Rails.env]["host"]
database = config[Rails.env]["database"]
username = config[Rails.env]["username"]
password = config[Rails.env]["pa...
Disabling Strict Standards in PHP 5.4
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What is the exact problem with multiple inheritance?
... also about increasing the expressiveness of a language, and increasing performance.
– Miles Rout
Jan 16 '13 at 7:19
4
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Variable number of arguments in C++?
...ans to tell the length of the list. You need the caller to give you this information or else somehow figure it out yourself. In the case of printf(), for example, the function parses the string argument for special tokens to figure out how many extra arguments it should expect in the variable argume...
How to ignore user's time zone and force Date() use specific time zone
...ime right now in 2 different places is the same UTC, but the output can be formatted differently.
What we need here is some formatting
var _date = new Date(1270544790922);
// outputs > "Tue Apr 06 2010 02:06:30 GMT-0700 (PDT)", for me
_date.toLocaleString('fi-FI', { timeZone: 'Europe/Helsinki'...
What does “xmlns” in XML mean?
...well choose a GUID as a URI. In fact, the ISBN that we have for books is a form of URI.
– Jaywalker
Sep 2 '14 at 15:41
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How can I hash a password in Java?
... if (!m.matches())
throw new IllegalArgumentException("Invalid token format");
int iterations = iterations(Integer.parseInt(m.group(1)));
byte[] hash = Base64.getUrlDecoder().decode(m.group(2));
byte[] salt = Arrays.copyOfRange(hash, 0, SIZE / 8);
byte[] check = pbkdf2(password...
What makes a SQL statement sargable?
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What is the difference between an Azure Web Site and an Azure Web Role
...
Web Roles give you several features beyond Web Apps (formerly Web Sites):
Ability to run elevated startup scripts to install apps, modify registry settings, install performance counters, fine-tune IIS, etc.
Ability to split an app up into tiers (maybe Web Role for front end, ...