大约有 22,000 项符合查询结果（耗时：0.0245秒） [XML]
What is the minimum I have to do to create an RPM file?
...ion: 1.0
Release: 1
Summary: Short description (first char has to be uppercase)
License: GPL
URL: www. your_website/
BuildRequires: package_required >= (or ==, or <=) 1.0.3 (for example)
%description
Description with almost 79 characters (first char h...
AsyncTask and error handling on Android
...ing." When you get an exception, store the exception (or some other error-string/code) in this variable. When onPostExecute is called, see if this instance-variable is set to some error. If so, show an error message." (From the user "Streets of Boston" groups.google.com/group/android-developers...
Reading a UTF8 CSV file with Python
...
The .encode method gets applied to a Unicode string to make a byte-string; but you're calling it on a byte-string instead... the wrong way 'round! Look at the codecs module in the standard library and codecs.open in particular for better general solutions for reading U...
JavaScript data formatting/pretty printer
...operty in obj)
{
var value = obj[property];
if (typeof value == 'string')
value = "'" + value + "'";
else if (typeof value == 'object')
{
if (value instanceof Array)
{
value = "[ " + value + " ]";
}
else
{
var ood = DumpObject(val...
jQuery document.createElement equivalent?
...document.createElement is much faster than having jQuery convert your html string into an element. (just in case you have an urge to make things more efficient)
– Sugendran
Nov 7 '08 at 7:19
...
How do I check to see if a value is an integer in MySQL?
...
I'll assume you want to check a string value. One nice way is the REGEXP operator, matching the string to a regular expression. Simply do
select field from table where field REGEXP '^-?[0-9]+$';
this is reasonably fast. If your field is numeric, just tes...
Get nth character of a string in Swift programming language
How can I get the nth character of a string? I tried bracket( [] ) accessor with no luck.
45 Answers
...
How to replace a hash key with another key
...
If all the keys are strings and all of them have the underscore prefix, then you can patch up the hash in place with this:
h.keys.each { |k| h[k[1, k.length - 1]] = h[k]; h.delete(k) }
The k[1, k.length - 1] bit grabs all of k except the firs...
How do I remove a project configuration in Visual Studio 2008?
...HRESULT E_FAIL has been returned from a call to a COM component. At line:1 char:30 + ... | Foreach { $_.ConfigurationManager.DeleteConfigurationRow("DLL-Impor ... + CategoryInfo : OperationStopped: (:) [], COMException + FullyQualifiedErrorId : System.Runtime.InteropServices.COMExcep...
Escape double quotes in a string
...
No.
Either use verbatim string literals as you have, or escape the " using backslash.
string test = "He said to me, \"Hello World\" . How are you?";
The string has not changed in either case - there is a single escaped " in it. This is just a way...