大约有 47,000 项符合查询结果（耗时：0.0583秒） [XML]
Return a value if no rows are found in Microsoft tSQL
...
Some apps does not allow you "simply" check
– Nadia Solovyeva
How to declare string constants in JavaScript? [duplicate]
...ipt method, but instead relative to your domain path). For example, for an app at localhost:8080/myDomain:
$(document).ready(function() {
$.getScript('/myDomain/myScriptsDir/constants.js');
...
then, if you have this in a file called constants.js:
var jsEnum = { //not really an enum, jus...
Removing all empty elements from a hash / YAML?
...e here for the benchmark.
In case you want to backport it to your Rails 3 app:
# config/initializers/rails4_backports.rb
class Hash
# as implemented in Rails 4
# File activesupport/lib/active_support/core_ext/hash/compact.rb, line 8
def compact
self.select { |_, value| !value.nil? }
e...
How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?
As I want to use Google maps in my application, I need the debug certificates' MD5 fingerprint. I tried following.:
10 Ans...
“Cannot start compilation: the output path is not specified for module…”
...
If this doesn't appear to work, don't forget to restart IntelliJ. Fixed it for me.
– Cobie Fisher
May 14 at 0:37
add...
Java String to SHA1
...s is my solution of converting string to sha1. It works well in my Android app:
private static String encryptPassword(String password)
{
String sha1 = "";
try
{
MessageDigest crypt = MessageDigest.getInstance("SHA-1");
crypt.reset();
crypt.update(password.getByte...
Keyboard shortcuts with jQuery
... special keys like shift,ctrl,alt,...) but I'm having troubles with basic mapping 0-9 and a-z).
– Martin
Dec 19 '13 at 12:16
1
...
Check if a subview is in a view
I'm making an app where I add a subview to a view using addSubview: on an IBAction . In the same way, when the button with that IBAction is touched again should call removeFromSuperview on that subview added on that IBAction :
...
rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib
... like running rails from under RubyMine where .bash_profile doesn't really apply.
– maksimov
Jan 12 '13 at 0:58
2
...
Laravel Eloquent: Ordering results of all()
... the scenes. It strikes me as though sorting the collection with sortBy() happens inside the Laravel Engine (in PHP), while the orderBy() is done in the database. Surely the database is going to be quicker in almost all conceivable situations, and as your dataset increases so will the disparity in p...