大约有 19,000 项符合查询结果（耗时：0.0348秒） [XML]
Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
... It refers to defining insertable=false,updatable=false on one of the sides of the relationship.
– BalusC
Sep 27 '10 at 18:47
...
Most efficient way to concatenate strings in JavaScript?
...he impact to GC is between the various methods?
– David Bradley
Aug 30 '18 at 20:06
For large strings, array.join may ...
Temporarily switch working copy to a specific Git commit
...the log, pick the commit you want, note down the sha1 hash that is used to identify the commit. Next, run git checkout hash. After you are done, git checkout original_branch. This has the advantage of not moving the HEAD, it simply switches the working copy to a specific commit.
...
Generating v5 UUID. What is name and namespace?
...nd namespace can be used to create a hierarchy of (very probably) unique UUIDs.
Roughly speaking, a type 3 or type 5 UUID is generated by hashing together a namespace identifier with a name. Type 3 UUIDs use MD5 and type 5 UUIDs use SHA1. Only 128-bits are available and 5 bits are used to specify t...
Android: When is onCreateOptionsMenu called during Activity lifecycle?
...
In my case on Android 2.3 and with FragmentActivity from v4-support library the order of life-cycle methods invoke is following:
07-18 18:29:21.629 20183-20183/? I/onCreate:
07-18 18:29:21.719 20183-20183/? I/onStart:
07-18 18:29:21.719 2...
How do I connect to a specific Wi-Fi network in Android programmatically?
...
You need to create WifiConfiguration instance like this:
String networkSSID = "test";
String networkPass = "pass";
WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"" + networkSSID + "\""; // Please note the quotes. String should contain ssid in quotes
Then, for WEP network you...
Updating address bar with new URL without hash or reloading the page
... answered Jul 27 '10 at 1:34
David MurdochDavid Murdoch
79.4k3838 gold badges139139 silver badges183183 bronze badges
...
Specify width in *characters*
When using a fixed width font , I'd like to specify the width of an HTML element in characters .
2 Answers
...
How can I merge two hashes without overwritten duplicate keys in Ruby?
...
Totally agree, thanks a lot for reverse_merge! method did not know it :)
– Claudio Acciaresi
Dec 30 '09 at 15:58
...
Why is good UI design so hard for some Developers? [closed]
...
Let me say it directly:
Improving on this does not begin with guidelines. It begins with reframing how you think about software.
Most hardcore developers have practically zero empathy with users of their software. They have no clue how users think, how users build models of software they...