// internal buffer only needs to be resliced.
// It returns the index where bytes should be written and whether it succeeded.
func (b *Buffer) tryGrowByReslice(n int) (int, bool) {
	if l := len(b.buf); n <= cap(b.buf)-l {
		b.buf = b.buf[:l+n]
		return l, true
	}
	return 0, false
}

// grow grows the buffer to guarantee space for n more bytes.
// It returns the index where bytes should be written.

        if (StringUtil.isBlank(fileName)) {
            fileName = uploadedFileName;
            try {
                int pos = fileName.indexOf('/');
                if (pos >= 0) {
                    fileName = fileName.substring(pos + 1);
                }
                pos = fileName.indexOf('\\');
                if (pos >= 0) {
                    fileName = fileName.substring(pos + 1);
                }

        int ci;

        if (username != null) {
            ci = username.indexOf('@');
            if (ci > 0) {
                domain = username.substring(ci + 1);
                username = username.substring(0, ci);
            } else {
                ci = username.indexOf('\\');
                if (ci > 0) {
                    domain = username.substring(0, ci);

                                final String name = entryName.substring(path.length() + 1, entryName.length() - 1);
                                if (name.indexOf('/') == -1) {
                                    subPackages.add(name);
                                    logger.debug("found {} in {}", name, resource);
                                }
                            }

            return;
        }
        for (final String value : values) {
            if (value.indexOf(',') >= 0) {
                action.throwValidationError(messages -> {
                    messages.addErrorsInvalidStrIsIncluded(propertyName, value, ",");
                }, hook);
            }
            if (value.indexOf("=>") >= 0) {
                action.throwValidationError(messages -> {

    //    sub.test.example.com.
    // 3. Wildcard patterns for single-label domain names are not permitted.

    if (!pattern.startsWith("*.") || pattern.indexOf('*', 1) != -1) {
      // Asterisk (*) is only permitted in the left-most domain name label and must be the only
      // character in that label
      return false
    }

    val now = taskRunner.backend.nanoTime()
    val executeNanoTime = now + delayNanos

    // If the task is already scheduled, take the earlier of the two times.
    val existingIndex = futureTasks.indexOf(task)
    if (existingIndex != -1) {
      if (task.nextExecuteNanoTime <= executeNanoTime) {
        taskRunner.logger.taskLog(task, this) { "already scheduled" }
        return false
      }

    return intersectionInCurrentDomain(Range.downTo(fromElement, BoundType.forBoolean(inclusive)));
  }

  @GwtIncompatible // not used by GWT emulation
  @Override
  int indexOf(@CheckForNull Object target) {
    if (!contains(target)) {
      return -1;
    }
    // The cast is safe because of the contains check—at least for any reasonable Comparable class.
    @SuppressWarnings("unchecked")

    }

    @Override
    public int size() {
      return ImmutableMultimap.this.size();
    }

    @Override
    Multiset.Entry<K> getEntry(int index) {
      Map.Entry<K, ? extends Collection<V>> entry = map.entrySet().asList().get(index);
      return Multisets.immutableEntry(entry.getKey(), entry.getValue().size());
    }

    @Override
    boolean isPartialView() {
      return true;
    }

```Python hl_lines="1  4-6" title="app/dependencies.py"
{!../../docs_src/bigger_applications/app/dependencies.py!}
```

/// tip

👥 ⚙️ 💭 🎚 📉 👉 🖼.

✋️ 🎰 💼 👆 🔜 🤚 👍 🏁 ⚙️ 🛠️ [💂‍♂ 🚙](security/index.md){.internal-link target=_blank}.

///

## ➕1️⃣ 🕹 ⏮️ `APIRouter`

➡️ 💬 👆 ✔️ 🔗 💡 🚚 "🏬" ⚪️➡️ 👆 🈸 🕹 `app/routers/items.py`.

👆 ✔️ *➡ 🛠️* :

* `/items/`
* `/items/{item_id}`