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python list in sql query as parameter
... cursor.execute(f'SELECT name FROM students WHERE id IN ({','.join('?' for _ in l)})', l). @bobince, you should also remark in your solution that using ? is the safe way to go in terms of avoid SQL injection. There are a lot of answers here that are vulnerable, basically any that concatenates string...
Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”
I have my JAVA_HOME set to:
32 Answers
32
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WebDriver: check if an element exists? [duplicate]
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}
Usage:
CustomHtmlUnitDriver wd = new CustomHtmlUnitDriver();
wd.get("http://example.org");
if (wd.isElementPresent(By.id("Accept"))) {
wd.findElement(By.id("Accept")).click();
}
else {
System.out.println("Accept button not found on page");
}
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What is the argument for printf that formats a long?
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193
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How to convert a byte array to a hex string in Java?
...ch faster than any other alternative, about half the time on long arrays. Compared to the answer I took it from, switching to bitwise ops --- as suggested in the discussion --- cut about 20% off of the time for long arrays. (Edit: When I say it's faster than the alternatives, I mean the alternative...
Rake just one migration
...l run the down and then the up step. You could do this in conjunction with commenting out the down step temporarily.
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How to delete all the rows in a table using Eloquent?
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List of foreign keys and the tables they reference
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The referenced primary key is described in the columns r_owner and r_constraint_name of the table ALL_CONSTRAINTS. This will give you the info you want:
SELECT a.table_name, a.column_name, a.constraint_name, c.owner,
-- referenced pk
c.r_owner, c_pk.table_name r_ta...
IN clause and placeholders
...uilder qb = new SQLiteQueryBuilder();
String[] sqlSelect = {COLUMN_NAME_ID, COLUMN_NAME_CODE, COLUMN_NAME_NAME, COLUMN_NAME_PURPOSE, COLUMN_NAME_STATUS};
String sqlTables = "Enumbers";
qb.setTables(sqlTables);
Cursor c = qb.query(db, sqlSelect, COLUMN_NAME_CODE+" I...
领域驱动设计系列 (四)：事件驱动下 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...动架构我就只能帮你到这里了。
作者: 王德水
出处：http://deshui.wang
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