本文整理了Java中com.google.common.base.Strings.repeat()
方法的一些代码示例,展示了Strings.repeat()
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Strings.repeat()
方法的具体详情如下:
包路径:com.google.common.base.Strings
类名称:Strings
方法名:repeat
[英]Returns a string consisting of a specific number of concatenated copies of an input string. For example, repeat("hey", 3) returns the string "heyheyhey".
[中]返回由输入字符串的特定数量的串联副本组成的字符串。例如,repeat(“hey”,3)返回字符串“heyheyhey”。
代码示例来源:origin: prestodb/presto
private static String indentString(int indent)
{
return Strings.repeat(INDENT, indent);
}
}
代码示例来源:origin: prestodb/presto
private static String indentString(int indent)
{
return Strings.repeat(" ", indent);
}
代码示例来源:origin: prestodb/presto
/**
* Format an indeterminate progress bar: [ <=> ]
*/
public static String formatProgressBar(int width, int tick)
{
int markerWidth = 3; // must be odd >= 3 (1 for each < and > marker, the rest for "="
int range = width - markerWidth; // "lower" must fall within this range for the marker to fit within the bar
int lower = tick % range;
if (((tick / range) % 2) == 1) { // are we going or coming back?
lower = range - lower;
}
return repeat(" ", lower) +
"<" + repeat("=", markerWidth - 2) + ">" +
repeat(" ", width - (lower + markerWidth));
}
代码示例来源:origin: prestodb/presto
private void print(Integer indentLevel, String value)
{
out.println(Strings.repeat(INDENT, indentLevel) + value);
}
}
代码示例来源:origin: prestodb/presto
private static String center(String s, int maxWidth, int padding)
{
int width = consoleWidth(s);
checkState(width <= maxWidth, "string width is greater than max width");
int left = (maxWidth - width) / 2;
int right = maxWidth - (left + width);
return repeat(" ", left + padding) + s + repeat(" ", right + padding);
}
代码示例来源:origin: prestodb/presto
private void appendLine(String template, Object... arguments)
{
result.append(repeat("\t", level)).append(format(template + "\n", arguments));
}
}
代码示例来源:origin: prestodb/presto
private static String align(String s, int maxWidth, int padding, boolean right)
{
int width = consoleWidth(s);
checkState(width <= maxWidth, "string width is greater than max width");
String large = repeat(" ", (maxWidth - width) + padding);
String small = repeat(" ", padding);
return right ? (large + s + small) : (small + s + large);
}
代码示例来源:origin: prestodb/presto
private static String indentString(int indent)
{
return Strings.repeat(" ", indent);
}
代码示例来源:origin: prestodb/presto
private List<String> createVarcharValuesNoNull()
{
List<String> values = new ArrayList<>();
for (int i = 0; i < ROWS; ++i) {
values.add(Strings.repeat("0", 4));
}
return values;
}
}
代码示例来源:origin: google/guava
public void testRepeat_null() {
try {
Strings.repeat(null, 5);
fail();
} catch (NullPointerException expected) {
}
}
代码示例来源:origin: prestodb/presto
private void output(int indent, String message, Object... args)
{
String formattedMessage = format(message, args);
result.append(format("%s%s\n", Strings.repeat(" ", indent), formattedMessage));
}
}
代码示例来源:origin: prestodb/presto
@Test
public void testArraySize()
{
int size = toIntExact(MAX_FUNCTION_MEMORY.toBytes() + 1);
assertInvalidFunction(
"array_distinct(ARRAY['" +
Strings.repeat("x", size) + "', '" +
Strings.repeat("y", size) + "', '" +
Strings.repeat("z", size) +
"'])",
EXCEEDED_FUNCTION_MEMORY_LIMIT);
}
代码示例来源:origin: prestodb/presto
private List<String> createVarcharValuesWithNulls()
{
Random random = new Random();
List<String> values = new ArrayList<>();
for (int i = 0; i < ROWS; ++i) {
if (random.nextBoolean()) {
values.add(Strings.repeat("0", 4));
}
else {
values.add(null);
}
}
return values;
}
}
代码示例来源:origin: google/guava
public void testRepeat() {
String input = "20";
assertEquals("", Strings.repeat(input, 0));
assertEquals("20", Strings.repeat(input, 1));
assertEquals("2020", Strings.repeat(input, 2));
assertEquals("202020", Strings.repeat(input, 3));
assertEquals("", Strings.repeat("", 4));
for (int i = 0; i < 100; ++i) {
assertEquals(2 * i, Strings.repeat(input, i).length());
}
try {
Strings.repeat("x", -1);
fail();
} catch (IllegalArgumentException expected) {
}
try {
// Massive string
Strings.repeat("12345678", (1 << 30) + 3);
fail();
} catch (ArrayIndexOutOfBoundsException expected) {
}
}
代码示例来源:origin: prestodb/presto
@Test
public void testDeallocate()
throws Exception
{
try (Connection connection = createConnection()) {
for (int i = 0; i < 200; i++) {
try {
connection.prepareStatement("SELECT '" + repeat("a", 300) + "'").close();
}
catch (Exception e) {
throw new RuntimeException("Failed at " + i, e);
}
}
}
}
代码示例来源:origin: google/guava
public void testReallySimpleFingerprints() {
assertEquals(8581389452482819506L, fingerprint("test".getBytes(UTF_8)));
// 32 characters long
assertEquals(-4196240717365766262L, fingerprint(Strings.repeat("test", 8).getBytes(UTF_8)));
// 256 characters long
assertEquals(3500507768004279527L, fingerprint(Strings.repeat("test", 64).getBytes(UTF_8)));
}
代码示例来源:origin: google/guava
/**
* Test for Guava issue 1061: http://code.google.com/p/guava-libraries/issues/detail?id=1061
*
* <p>CharStreams.copy was failing to clear its CharBuffer after each read call, which effectively
* reduced the available size of the buffer each time a call to read didn't fill up the available
* space in the buffer completely. In general this is a performance problem since the buffer size
* is permanently reduced, but with certain Reader implementations it could also cause the buffer
* size to reach 0, causing an infinite loop.
*/
public void testCopyWithReaderThatDoesNotFillBuffer() throws IOException {
// need a long enough string for the buffer to hit 0 remaining before the copy completes
String string = Strings.repeat("0123456789", 100);
StringBuilder b = new StringBuilder();
// the main assertion of this test is here... the copy will fail if the buffer size goes down
// each time it is not filled completely
long copied = CharStreams.copy(newNonBufferFillingReader(new StringReader(string)), b);
assertEquals(string, b.toString());
assertEquals(string.length(), copied);
}
代码示例来源:origin: google/guava
private void reallyTestAllMatches(CharMatcher matcher, CharSequence s) {
assertTrue(matcher.matches(s.charAt(0)));
assertEquals(0, matcher.indexIn(s));
assertEquals(0, matcher.indexIn(s, 0));
assertEquals(1, matcher.indexIn(s, 1));
assertEquals(-1, matcher.indexIn(s, s.length()));
assertEquals(s.length() - 1, matcher.lastIndexIn(s));
assertTrue(matcher.matchesAnyOf(s));
assertTrue(matcher.matchesAllOf(s));
assertFalse(matcher.matchesNoneOf(s));
assertEquals("", matcher.removeFrom(s));
assertEquals(Strings.repeat("z", s.length()), matcher.replaceFrom(s, 'z'));
assertEquals(Strings.repeat("ZZ", s.length()), matcher.replaceFrom(s, "ZZ"));
assertEquals("", matcher.trimFrom(s));
assertEquals(s.length(), matcher.countIn(s));
}
代码示例来源:origin: prestodb/presto
private static void printStatement(String sql)
{
println(sql.trim());
println("");
ParsingOptions parsingOptions = new ParsingOptions(AS_DOUBLE /* anything */);
Statement statement = SQL_PARSER.createStatement(sql, parsingOptions);
println(statement.toString());
println("");
println(SqlFormatter.formatSql(statement, Optional.empty()));
println("");
assertFormattedSql(SQL_PARSER, statement);
println(repeat("=", 60));
println("");
}
代码示例来源:origin: prestodb/presto
private DataTypeTest mysqlCharTypeTest()
{
return DataTypeTest.create()
.addRoundTrip(charDataType("char", 1), "")
.addRoundTrip(charDataType("char", 1), "a")
.addRoundTrip(charDataType(1), "")
.addRoundTrip(charDataType(1), "a")
.addRoundTrip(charDataType(8), "abc")
.addRoundTrip(charDataType(8), "12345678")
.addRoundTrip(charDataType(255), repeat("a", 255));
}
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