timestamp

问题 It seems that the most popular versioning systems like Git and others allow for repository history modification - which in turn means that the date of commit/revision can be very easily forged. If one would ever want to retrospectively check the development process of a project hosted on GitHub, none of the information will be guaranteed to be true. Accuracy of dates (and authorship as well) can be crucial for copyrighting and retrospective validation from a third-party, so I've been

问题 I have a date in ISO 8601 date format 2015-09-08T01:55:28Z . I used this code to convert the ISO 8601 fate to a Calendar object: Calendar cal = javax.xml.bind.DatatypeConverter.parseDateTime("2015-09-08T01:55:28Z"); and now I need to use the cal.getTime() to get my time, but I need to convert it to a java.sql.Timestamp . I tried to do this: final Timestamp finalDate = (Timestamp) cal.getTime(); but I got this error: java.lang.ClassCastException: java.util.Date cannot be cast to java.sql

问题 I need to insert data to a given external table which should be partitioned by the inserted date. My question is how is Hive handling the timestamp generation? When I select a timestamp for all inserted records like this: WITH delta_insert AS ( SELECT trg.*, from_unixtime(unix_timestamp()) AS generic_timestamp FROM target_table trg ) SELECT * FROM delta_insert; Will the timestamp always be identical for all records, even if the query takes a lot of time to un? Or should I alternatively only

问题 I need to insert data to a given external table which should be partitioned by the inserted date. My question is how is Hive handling the timestamp generation? When I select a timestamp for all inserted records like this: WITH delta_insert AS ( SELECT trg.*, from_unixtime(unix_timestamp()) AS generic_timestamp FROM target_table trg ) SELECT * FROM delta_insert; Will the timestamp always be identical for all records, even if the query takes a lot of time to un? Or should I alternatively only

问题 I need to insert data to a given external table which should be partitioned by the inserted date. My question is how is Hive handling the timestamp generation? When I select a timestamp for all inserted records like this: WITH delta_insert AS ( SELECT trg.*, from_unixtime(unix_timestamp()) AS generic_timestamp FROM target_table trg ) SELECT * FROM delta_insert; Will the timestamp always be identical for all records, even if the query takes a lot of time to un? Or should I alternatively only

问题 How do I get the Scala UTC timestamp in seconds since January 1st, 1970? 回答1: Same way as you would in Java: val timestamp: Long = System.currentTimeMillis / 1000 回答2: As of Java 8 it's possible to do so like so: import java.time.Instant unixTimestamp : Long = Instant.now.getEpochSecond Via micha's answer here: https://stackoverflow.com/a/24703573/577199 来源： https://stackoverflow.com/questions/11352037/scala-utc-timestamp-in-seconds-since-january-1st-1970

问题 How can I compare if mytime is between fromtime and totime : Timestamp fromtime; Timestamp totime; Timestamp mytime; 回答1: if(mytime.after(fromtime) && mytime.before(totime)) //mytime is in between 回答2: Use the before and after methods: Javadoc if (mytime.after(fromtime) && mytime.before(totime)) 回答3: From : http://download.oracle.com/javase/6/docs/api/java/sql/Timestamp.html#compareTo(java.sql.Timestamp) public int compareTo(Timestamp ts) Compares this Timestamp object to the given Timestamp

问题 How can I compare if mytime is between fromtime and totime : Timestamp fromtime; Timestamp totime; Timestamp mytime; 回答1: if(mytime.after(fromtime) && mytime.before(totime)) //mytime is in between 回答2: Use the before and after methods: Javadoc if (mytime.after(fromtime) && mytime.before(totime)) 回答3: From : http://download.oracle.com/javase/6/docs/api/java/sql/Timestamp.html#compareTo(java.sql.Timestamp) public int compareTo(Timestamp ts) Compares this Timestamp object to the given Timestamp

问题 I need to design a app.That when Record the Video through Camera,Show and Record the SystemTimeStamp above the Video. Can it work with current Android Frameworks? If can, How can i do this? Thanks for anybody to read this! 回答1: Follow the procedure below. 1. Capture video byte array (of each frame). 2. Now create bitmap from byte array. 3. Use link below to overlay text over bitmap. 4. Save those bitmaps to create video. Text Overlay bitmap. 回答2: You could follow a two-stage approach. First,

问题 I need to design a app.That when Record the Video through Camera,Show and Record the SystemTimeStamp above the Video. Can it work with current Android Frameworks? If can, How can i do this? Thanks for anybody to read this! 回答1: Follow the procedure below. 1. Capture video byte array (of each frame). 2. Now create bitmap from byte array. 3. Use link below to overlay text over bitmap. 4. Save those bitmaps to create video. Text Overlay bitmap. 回答2: You could follow a two-stage approach. First,