大约有 23,000 项符合查询结果（耗时：0.0425秒） [XML]
What does “Object reference not set to an instance of an object” mean? [duplicate]
...
The following code is a simple way of reproducing this:
static void Main(string[] args)
{
var exampleClass = new ExampleClass();
var returnedClass = exampleClass.ExampleMethod();
returnedClass.AnotherExampleMethod(); //NullReferenceException here.
}
class ExampleClass
{
public Ret...
Is there a way to avoid null check before the for-each loop iteration starts? [duplicate]
...
Apache Commons
for (String code: ListUtils.emptyIfNull(codes)) {
}
Google Guava
for (String code: Optional.of(codes).get()) {
}
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How do I get the full path of the current file's directory?
...cover weird behaviours on windows, where dirname(file) may return an empty string!
– sorin
Oct 25 '11 at 10:10
4
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jQuery text() and newlines
...in JSON format with an API which embedded literal \n control characters in strings.
– D. Visser
Mar 25 '16 at 11:46
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How can I query a value in SQL Server XML column
...rom
MyTable
where
Roles.value('(/root/role)[1]', 'varchar(max)') like 'StringToSearchFor'
These pages will show you more about how to query XML in T-SQL:
Querying XML fields using t-sql
Flattening XML Data in SQL Server
EDIT
After playing with it a little bit more, I ended up with this amazing ...
Using an SSH keyfile with Fabric
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env.key_filename can contain a list of strings to try multiple keyfiles for a connection.
– Carl G
Apr 22 '14 at 12:29
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How to get function parameter names/values dynamically?
..._NAMES = /([^\s,]+)/g;
function getParamNames(func) {
var fnStr = func.toString().replace(STRIP_COMMENTS, '');
var result = fnStr.slice(fnStr.indexOf('(')+1, fnStr.indexOf(')')).match(ARGUMENT_NAMES);
if(result === null)
result = [];
return result;
}
Example usage:
getParamNames(getP...
jQuery - add additional parameters on submit (NOT ajax)
... Isn't there a limit on data size? I sent some big object using JSON.stringify(obj) and this method and it appeared to be truncated.
– omikron
Feb 26 '16 at 10:21
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Why does the CheckBoxFor render an additional input tag, and how can I get the value using the FormC
...explanation but in some cases you might want to get 'nothing' in the query string when the ckecbox is not checked - so the default behaviour. Is this possible using the Html helper or do I have to simply use the <input> tag.
– Maksymilian Majer
Jun 21 '10...
OAuth secrets in mobile apps
When using the OAuth protocol, you need a secret string obtained from the service you want to delegate to. If you are doing this in a web app, you can simply store the secret in your data base or on the file system, but what is the best way to handle it in a mobile app (or a desktop app for that mat...