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TypeScript object.isEmpty函数代码示例

本文整理汇总了TypeScript中core/util/object.isEmpty函数的典型用法代码示例。如果您正苦于以下问题:TypeScript isEmpty函数的具体用法?TypeScript isEmpty怎么用?TypeScript isEmpty使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了isEmpty函数的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的TypeScript代码示例。

示例1: get_best_ticker

  get_best_ticker(data_low: number, data_high: number, desired_n_ticks: number) {
    const data_range = data_high - data_low
    const ideal_interval = this.get_ideal_interval(data_low, data_high, desired_n_ticks)
    const ticker_ndxs = [
      sortedIndex(this.min_intervals, ideal_interval) - 1,
      sortedIndex(this.max_intervals, ideal_interval),
    ]
    const intervals = [
      this.min_intervals[ticker_ndxs[0]],
      this.max_intervals[ticker_ndxs[1]],
    ]
    const errors = intervals.map((interval) => {
      return Math.abs(desired_n_ticks - (data_range / interval))
    })

    let best_ticker

    if (isEmpty(errors.filter((e) => !isNaN(e)))) {
      // this can happen if the data isn't loaded yet, we just default to the first scale
      best_ticker = this.tickers[0]
    } else {
      const best_index = argmin(errors)
      const best_ticker_ndx = ticker_ndxs[best_index]
      best_ticker = this.tickers[best_ticker_ndx]
    }

    return best_ticker
  }
开发者ID:FourtekIT-incubator,项目名称:bokeh,代码行数:28,代码来源:composite_ticker.ts

示例2: _get_label_extent

  _get_label_extent() {
    let label_extent;
    const major_labels = this.model.tick_info().labels.major;
    if ((this.model.color_mapper.low != null) && (this.model.color_mapper.high != null) && !isEmpty(major_labels)) {
      const { ctx } = this.plot_view.canvas_view;
      ctx.save();
      this.visuals.major_label_text.set_value(ctx);
      switch (this.model.orientation) {
        case "vertical":
          label_extent = max((major_labels.map((label) => ctx.measureText(label.toString()).width)));
          break;
        case "horizontal":
          label_extent = text_util.get_text_height(this.visuals.major_label_text.font_value()).height;
          break;
      }

      label_extent += this.model.label_standoff;
      ctx.restore();
    } else {
      label_extent = 0;
    }
    return label_extent;
  }
开发者ID:FourtekIT-incubator,项目名称:bokeh,代码行数:23,代码来源:color_bar.ts

示例3: Error

  /*protected*/ _get_label_extent(): number {
    const major_labels = this.tick_info().labels.major

    let label_extent: number
    if (this.model.color_mapper.low != null && this.model.color_mapper.high != null && !isEmpty(major_labels)) {
      const {ctx} = this.plot_view.canvas_view
      ctx.save()
      this.visuals.major_label_text.set_value(ctx)
      switch (this.model.orientation) {
        case "vertical":
          label_extent = max((major_labels.map((label) => ctx.measureText(label.toString()).width)))
          break
        case "horizontal":
          label_extent = text_util.measure_font(this.visuals.major_label_text.font_value()).height
          break
        default:
          throw new Error("unreachable code")
      }

      label_extent += this.model.label_standoff
      ctx.restore()
    } else
      label_extent = 0

    return label_extent
  }
开发者ID:jsignell,项目名称:bokeh,代码行数:26,代码来源:color_bar.ts


注:本文中的core/util/object.isEmpty函数示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。