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What is the meaning of the term “thread-safe”?
...r to do so.
For example, Java has two classes that are almost equivalent, StringBuffer and StringBuilder. The difference is that StringBuffer is thread-safe, so a single instance of a StringBuffer may be used by multiple threads at once. StringBuilder is not thread-safe, and is designed as a higher...
Order by multiple columns with Doctrine
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The orderBy method requires either two strings or an Expr\OrderBy object. If you want to add multiple order declarations, the correct thing is to use addOrderBy method, or instantiate an OrderBy object and populate it accordingly:
# Inside a Repository method:...
Adding data attribute to DOM
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It also has to be a string - $('div').attr('data-info', ''+info.id)
– daviestar
Mar 17 '14 at 5:15
1
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How do I create directory if it doesn't exist to create a file?
...ision with native MoveTo
public static void MoveTo(this FileInfo file, string destination, bool autoCreateDirectory) {
if (autoCreateDirectory)
{
var destinationDirectory = new DirectoryInfo(Path.GetDirectoryName(destination));
if (!destinationDirectory...
Is there a “not in” operator in JavaScript for checking object properties?
... @MajidFouladpour id is an variable that could have any value, 'id' is a string with the two letters i and d, so hasOwnProperty(id) checks if the property specified in the variable id exists, and hasOwnProperty('id') checks if there is a property named id.
– some
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What does java:comp/env/ do?
...ctFactoryBean that is, when set to true, used to automatically prepend the string java:comp/env/ if it is not already present.
<bean id="someId" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="jdbc/loc"/>
<property name="resourceRef" value...
What is the minimum length of a valid international phone number?
...f the number is in valid E164 format. Its pretty good!
Taking an example:
String phoneNumberE164Format = "+14167129018"
PhoneNumberUtil phoneUtil = PhoneNumberUtil.getInstance();
try {
PhoneNumber phoneNumberProto = phoneUtil.parse(phoneNumberE164Format, null);
boolean isValid = phoneUtil.i...
How does Spring autowire by name when more than one matching bean is found?
... this.country = country;
}
}
In this case, the "#{country} string is an Spring Expression Language (SpEL) expression which evaluates to a bean named country.
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postgresql: INSERT INTO … (SELECT * …)
...required DETAIL: Non-superusers must provide a password in the connection string.
– Neel Darji
May 17 at 6:25
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What is the equivalent of “android:fontFamily=”sans-serif-light" in Java code?
...efault font family used, use any of this by replacing the double quotation string "sans-serif-medium"
FONT FAMILY TTF FILE
1 casual ComingSoon.ttf
2 cursive DancingScript-Regular.ttf
3 monospace ...