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When to use ref and when it is not necessary in C#
...mean it's good. It would have been better if rather than if (int.TryParse("123", out var theInt) { /* use theInt */ } we had var candidate = int.TrialParse("123"); if (candidate.Parsed) { /* do something with candidate.Value */ } It is more code, but is much more consistent with the C# language desi...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...上出了问题。（全文完）
文章转自： 酷 壳 – CoolShell.cn
Hide options in a select list using jQuery
...Nov 17 '10 at 13:17
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How can I send large messages with Kafka (over 15MB)?
...roperties. Now also bigger messages work :).
– Sonson123
Feb 3 '14 at 15:37
3
Are there any known...
How do you build a Singleton in Dart?
...sible way:
void main() {
var s1 = Singleton.instance;
s1.somedata = 123;
var s2 = Singleton.instance;
print(s2.somedata); // 123
print(identical(s1, s2)); // true
print(s1 == s2); // true
//var s3 = new Singleton(); //produces a warning re missing default constructor and breaks on ...
Flask-SQLAlchemy how to delete all rows in a single table
...e query.
ex.
#for specific value
db.session.query(Model).filter(Model.id==123).delete()
db.session.commit()
Delete Single Record by Object
record_obj = db.session.query(Model).filter(Model.id==123).first()
db.session.delete(record_obj)
db.session.commit()
https://flask-sqlalchemy.palletsprojec...
grepping using the “|” alternative operator
...overflow.com/a/6775943/3933332 doesn't have?
– Rizier123
Mar 1 '15 at 5:35
3
@Rizier123 -- look a...
How to change the author and committer name and e-mail of multiple commits in Git?
...the new rewritten log via: git log --pretty=format:"[%h] %cd - Committer: %cn (%ce), Author: %an (%ae)" ! One more thing: .git/logs has some log files that still have your old name!
– gw0
Feb 3 '17 at 22:23
...
How to call a stored procedure from Java and JPA
...prepareCall("{call getEmployeeDetails(?, ?)}");
cstmt.setInt("employeeId", 123);
cstmt.setInt("companyId", 456);
ResultSet rs = cstmt.executeQuery();
Reference
JDBC documentation: Java SE 6
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How do you convert Html to plain text?
...e plain text look painful. Do you know how to fix?
– 123iamking
Jun 7 '16 at 7:24
...